TY  - JOUR
AU  - Dimitrijević, Aleksandra
AU  - Marić, Slađana
AU  - Jocić, Ana
AU  - Tekić, Danijela
AU  - Mušović, Jasmina
AU  - Amaral, Joana S.
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13029
AB  - Polyphenols are natural compounds with enhanced antioxidant properties. They are present in relatively high concentrations in fruit/vegetable by-products. Therefore, there is a need for the development of efficient and cost-effective methods for the separation and purification of these valuable compounds. Traditional extraction with organic solvents needs to be switched to novel methods that are more efficient, with reduced extraction times and low consumption of organic solvents. Aiming at developing sustainable processes for the separation and purification of phenolic compounds, we used three model compounds, namely resveratrol, quercetin, and gallic acid, to investigate ionic liquid-based aqueous biphasic systems (IL-ABSs) formed by choliniumbased IL in combination with polypropylene glycol with a molecular mass of 400 g/mol (PPG400). The ABS composition in the two-phase region was selected according to a previously determined phase diagram. Extraction studies indicated the preferential partition of resveratrol and quercetin toward the hydrophobic PPG-rich phase that is mainly dominated by its hydrophobic nature and the strong salting-out effect of ILs. On the other hand, due to its considerably hydrophilic nature, gallic acid preferentially migrates toward the IL phase. The achieved results from grape stem extract demonstrated high extraction efficiencies of cholinium dihydrogen phosphate (~99% for resveratrol for the PPG phase and 78% for gallic acid for the IL phase), with considerable selectivity, demonstrating promising outcomes for potential applications.
T2  - Foods
T1  - Green Extraction Strategy Using Bio-Based Aqueous Biphasic Systems for Polyphenol Valorization from Grape By-Product
VL  - 13
IS  - 6
SP  - 954
DO  - 10.3390/foods13060954
ER  - 

@article{
author = "Dimitrijević, Aleksandra and Marić, Slađana and Jocić, Ana and Tekić, Danijela and Mušović, Jasmina and Amaral, Joana S.",
year = "2024",
abstract = "Polyphenols are natural compounds with enhanced antioxidant properties. They are present in relatively high concentrations in fruit/vegetable by-products. Therefore, there is a need for the development of efficient and cost-effective methods for the separation and purification of these valuable compounds. Traditional extraction with organic solvents needs to be switched to novel methods that are more efficient, with reduced extraction times and low consumption of organic solvents. Aiming at developing sustainable processes for the separation and purification of phenolic compounds, we used three model compounds, namely resveratrol, quercetin, and gallic acid, to investigate ionic liquid-based aqueous biphasic systems (IL-ABSs) formed by choliniumbased IL in combination with polypropylene glycol with a molecular mass of 400 g/mol (PPG400). The ABS composition in the two-phase region was selected according to a previously determined phase diagram. Extraction studies indicated the preferential partition of resveratrol and quercetin toward the hydrophobic PPG-rich phase that is mainly dominated by its hydrophobic nature and the strong salting-out effect of ILs. On the other hand, due to its considerably hydrophilic nature, gallic acid preferentially migrates toward the IL phase. The achieved results from grape stem extract demonstrated high extraction efficiencies of cholinium dihydrogen phosphate (~99% for resveratrol for the PPG phase and 78% for gallic acid for the IL phase), with considerable selectivity, demonstrating promising outcomes for potential applications.",
journal = "Foods",
title = "Green Extraction Strategy Using Bio-Based Aqueous Biphasic Systems for Polyphenol Valorization from Grape By-Product",
volume = "13",
number = "6",
pages = "954",
doi = "10.3390/foods13060954"
}

Dimitrijević, A., Marić, S., Jocić, A., Tekić, D., Mušović, J.,& Amaral, J. S.. (2024). Green Extraction Strategy Using Bio-Based Aqueous Biphasic Systems for Polyphenol Valorization from Grape By-Product. in Foods, 13(6), 954.
https://doi.org/10.3390/foods13060954

Dimitrijević A, Marić S, Jocić A, Tekić D, Mušović J, Amaral JS. Green Extraction Strategy Using Bio-Based Aqueous Biphasic Systems for Polyphenol Valorization from Grape By-Product. in Foods. 2024;13(6):954.
doi:10.3390/foods13060954 .

Dimitrijević, Aleksandra, Marić, Slađana, Jocić, Ana, Tekić, Danijela, Mušović, Jasmina, Amaral, Joana S., "Green Extraction Strategy Using Bio-Based Aqueous Biphasic Systems for Polyphenol Valorization from Grape By-Product" in Foods, 13, no. 6 (2024):954,
https://doi.org/10.3390/foods13060954 . .

TY  - JOUR
AU  - Marić, Slađana
AU  - Jocić, Ana
AU  - Tekić, Danijela
AU  - Mušović, Jasmina
AU  - Milićević, Jelena
AU  - Dimitrijević, Aleksandra
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12838
AB  - This study explores the use of a series of cholinium ionic liquids (ILs) or salts in combination with polypropylene glycol 400 to form aqueous biphasic systems (ABS) for extracting various polarity pesticides (dicamba, clomazone, pyraclostrobin, and deltamethrin) from water. We assessed five cholinium-based salting-out agents ([Ch][DHP], [Ch]Cl, [Ch][Ac], [Ch][Lac], and [Ch][Nic]), chosen for their structural diversity and unique properties, such as high salting-out potential and different ability to undergo specific interactions. Liquid-liquid equilibrium phase diagrams were established, and partition experiments were conducted to evaluate extraction efficiency. Different partition patterns were obtained for studied pesticides, with [Ch][DHP] demonstrating the highest efficiency exceeding 90 % for each target pesticide due to its strong salting-out ability. On the other hand, more diverse partition trends due to specific interactions were obtained for low-melting cholinium-ILs ABS. The effect of pH and temperature on the partitioning behavior in [Ch][Ac]-based ABS highlighted the cholinium ILs extraction system's customizable nature. Focusing on [Ch]Cl for its eco-friendly aspects, widespread availability and excellent extraction performance, we optimized parameters for the removal of pesticides from real samples, applying the technology to spiked agricultural wastewater with an extraction efficiency of over 99 %. Our findings demonstrate the potential of cholinium-based IL-ABS in reducing environmental pollution through efficient pesticide extraction.
T2  - Separation and Purification Technology
T1  - Customizable cholinium-based aqueous biphasic systems as ecofriendly extraction platform for removal of pesticide from wastewaters
VL  - 340
SP  - 126609
DO  - 10.1016/j.seppur.2024.126609
ER  - 

@article{
author = "Marić, Slađana and Jocić, Ana and Tekić, Danijela and Mušović, Jasmina and Milićević, Jelena and Dimitrijević, Aleksandra",
year = "2024",
abstract = "This study explores the use of a series of cholinium ionic liquids (ILs) or salts in combination with polypropylene glycol 400 to form aqueous biphasic systems (ABS) for extracting various polarity pesticides (dicamba, clomazone, pyraclostrobin, and deltamethrin) from water. We assessed five cholinium-based salting-out agents ([Ch][DHP], [Ch]Cl, [Ch][Ac], [Ch][Lac], and [Ch][Nic]), chosen for their structural diversity and unique properties, such as high salting-out potential and different ability to undergo specific interactions. Liquid-liquid equilibrium phase diagrams were established, and partition experiments were conducted to evaluate extraction efficiency. Different partition patterns were obtained for studied pesticides, with [Ch][DHP] demonstrating the highest efficiency exceeding 90 % for each target pesticide due to its strong salting-out ability. On the other hand, more diverse partition trends due to specific interactions were obtained for low-melting cholinium-ILs ABS. The effect of pH and temperature on the partitioning behavior in [Ch][Ac]-based ABS highlighted the cholinium ILs extraction system's customizable nature. Focusing on [Ch]Cl for its eco-friendly aspects, widespread availability and excellent extraction performance, we optimized parameters for the removal of pesticides from real samples, applying the technology to spiked agricultural wastewater with an extraction efficiency of over 99 %. Our findings demonstrate the potential of cholinium-based IL-ABS in reducing environmental pollution through efficient pesticide extraction.",
journal = "Separation and Purification Technology",
title = "Customizable cholinium-based aqueous biphasic systems as ecofriendly extraction platform for removal of pesticide from wastewaters",
volume = "340",
pages = "126609",
doi = "10.1016/j.seppur.2024.126609"
}

Marić, S., Jocić, A., Tekić, D., Mušović, J., Milićević, J.,& Dimitrijević, A.. (2024). Customizable cholinium-based aqueous biphasic systems as ecofriendly extraction platform for removal of pesticide from wastewaters. in Separation and Purification Technology, 340, 126609.
https://doi.org/10.1016/j.seppur.2024.126609

Marić S, Jocić A, Tekić D, Mušović J, Milićević J, Dimitrijević A. Customizable cholinium-based aqueous biphasic systems as ecofriendly extraction platform for removal of pesticide from wastewaters. in Separation and Purification Technology. 2024;340:126609.
doi:10.1016/j.seppur.2024.126609 .

Marić, Slađana, Jocić, Ana, Tekić, Danijela, Mušović, Jasmina, Milićević, Jelena, Dimitrijević, Aleksandra, "Customizable cholinium-based aqueous biphasic systems as ecofriendly extraction platform for removal of pesticide from wastewaters" in Separation and Purification Technology, 340 (2024):126609,
https://doi.org/10.1016/j.seppur.2024.126609 . .

TY  - CONF
AU  - Mušović, Jasmina
AU  - Marić, Slađana
AU  - Jocić, Ana
AU  - Milićević, Jelena
AU  - Stanković, Dalibor
AU  - Dimitrijević, Aleksandra
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11961
AB  - Temperature- and pH-responsive ionic liquid-based aqueous biphasic systems (IL-ABS) have been proposed as a viable and sustainable extraction/separation processes. Combining a thermosensitive polymer (such as polypropylene glycol-400, PPG400) and a pH-sensitive IL (such as choline-acetate, [Ch][Ac] as the phase-forming agents, we have tried to develop an efficient extraction platform for removing the pollutants from wastewater, namely herbicide dicamba (DIC) and insecticide deltamethrin (DLM). First, the ABS ternary phase diagrams are determined at different temperatures (25, 35 and 45°C) and pH values (2, 5, 6, and 7). The operational extraction composition was chosen to fit within the biphase region of each ABS, namely 15 wt% of IL and 40 wt% of polymer. Subsequently, extraction parameters were determined for each target compound (using high-performance chromatography) at different temperatures and pH values. Initially, polar pesticide dicamba migrated preferentially toward the IL-rich phase while deltamethrin showed the opposite direction at room temperature and pH 7. Obtained extraction efficiencies were about 93% and 23% for DLM and DIC, respectively, toward polymer-rich phase. The ability to simultaneously respond to two stimuli, in this case, temperature and pH, allowed us to obtain highly efficient extraction by changing stimuli-inducing parameters. At pH=2 and T=25°C extraction efficiencies higher than 96% for DLM and 83% for DIC were acquired. Therefore, by adjusting the applied stimuli, ABS can improve the performance resulting in the successful removal of pesticides from the aqueous phase, regardless of their polarity. This remarkable capability makes these ABSs highly appealing for designing wastewater treatment processes.
PB  - University of Belgrade : Faculty of Chemistry
C3  - YISAC 2023 : 28th Young Investigators' Seminar on Analytical Chemistry : the book of abstracts
T1  - Responsive Ionic Liquid-Based Aqueous Biphasic Systems as Efficient Extraction Platform for Sustainable Removal of Pesticides from Wastewater
SP  - 31
EP  - 31
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11961
ER  - 

@conference{
author = "Mušović, Jasmina and Marić, Slađana and Jocić, Ana and Milićević, Jelena and Stanković, Dalibor and Dimitrijević, Aleksandra",
year = "2023",
abstract = "Temperature- and pH-responsive ionic liquid-based aqueous biphasic systems (IL-ABS) have been proposed as a viable and sustainable extraction/separation processes. Combining a thermosensitive polymer (such as polypropylene glycol-400, PPG400) and a pH-sensitive IL (such as choline-acetate, [Ch][Ac] as the phase-forming agents, we have tried to develop an efficient extraction platform for removing the pollutants from wastewater, namely herbicide dicamba (DIC) and insecticide deltamethrin (DLM). First, the ABS ternary phase diagrams are determined at different temperatures (25, 35 and 45°C) and pH values (2, 5, 6, and 7). The operational extraction composition was chosen to fit within the biphase region of each ABS, namely 15 wt% of IL and 40 wt% of polymer. Subsequently, extraction parameters were determined for each target compound (using high-performance chromatography) at different temperatures and pH values. Initially, polar pesticide dicamba migrated preferentially toward the IL-rich phase while deltamethrin showed the opposite direction at room temperature and pH 7. Obtained extraction efficiencies were about 93% and 23% for DLM and DIC, respectively, toward polymer-rich phase. The ability to simultaneously respond to two stimuli, in this case, temperature and pH, allowed us to obtain highly efficient extraction by changing stimuli-inducing parameters. At pH=2 and T=25°C extraction efficiencies higher than 96% for DLM and 83% for DIC were acquired. Therefore, by adjusting the applied stimuli, ABS can improve the performance resulting in the successful removal of pesticides from the aqueous phase, regardless of their polarity. This remarkable capability makes these ABSs highly appealing for designing wastewater treatment processes.",
publisher = "University of Belgrade : Faculty of Chemistry",
journal = "YISAC 2023 : 28th Young Investigators' Seminar on Analytical Chemistry : the book of abstracts",
title = "Responsive Ionic Liquid-Based Aqueous Biphasic Systems as Efficient Extraction Platform for Sustainable Removal of Pesticides from Wastewater",
pages = "31-31",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11961"
}

Mušović, J., Marić, S., Jocić, A., Milićević, J., Stanković, D.,& Dimitrijević, A.. (2023). Responsive Ionic Liquid-Based Aqueous Biphasic Systems as Efficient Extraction Platform for Sustainable Removal of Pesticides from Wastewater. in YISAC 2023 : 28th Young Investigators' Seminar on Analytical Chemistry : the book of abstracts
University of Belgrade : Faculty of Chemistry., 31-31.
https://hdl.handle.net/21.15107/rcub_vinar_11961

Mušović J, Marić S, Jocić A, Milićević J, Stanković D, Dimitrijević A. Responsive Ionic Liquid-Based Aqueous Biphasic Systems as Efficient Extraction Platform for Sustainable Removal of Pesticides from Wastewater. in YISAC 2023 : 28th Young Investigators' Seminar on Analytical Chemistry : the book of abstracts. 2023;:31-31.
https://hdl.handle.net/21.15107/rcub_vinar_11961 .

Mušović, Jasmina, Marić, Slađana, Jocić, Ana, Milićević, Jelena, Stanković, Dalibor, Dimitrijević, Aleksandra, "Responsive Ionic Liquid-Based Aqueous Biphasic Systems as Efficient Extraction Platform for Sustainable Removal of Pesticides from Wastewater" in YISAC 2023 : 28th Young Investigators' Seminar on Analytical Chemistry : the book of abstracts (2023):31-31,
https://hdl.handle.net/21.15107/rcub_vinar_11961 .

TY  - JOUR
AU  - Zdolšek, Nikola
AU  - Vujković, Milica
AU  - Metin, Önder
AU  - Brković, Snežana
AU  - Jocić, Ana
AU  - Dimitrijević, Aleksandra
AU  - Trtić-Petrović, Tatjana M.
AU  - Šljukić, Biljana
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10229
AB  - Development of cost-effective, bi-functional carbon electrocatalysts via direct carbonization of ionic liquids (bis(cholinium) tetrachlorocobaltate(II) ([Ch]2[CoCl4]) and bis(1-butyl-3-methylimidazolium) tetrachlorocobaltate(II) ([Bmim]2[CoCl4])) is reported herein for the first time. Carbon electrocatalysts, dual-doped with cobalt and nitrogen, were tested for oxygen reduction (ORR) and oxygen evolution (OER) reactions. Both materials show high bi-functional catalytic activity and excellent stability due to synergistic effects arising from the presence of nitrogen and cobalt. Electrocatalyst prepared by carbonization of [Ch]2[CoCl4] show exceptional activity and selectivity toward ORR. Conversely, electrocatalyst prepared from [Bmim]2[CoCl4] showed a slightly better OER performance indicating that different catalytic sites are responsible for O2 reduction and H2O oxidation. Parent CoO particles with graphitic nitrogen boost activity for ORR, while elemental Co supported by nitrogen atoms is responsible for OER activity. Finally, energy consumption during electrolytic oxygen production was calculated revealing energy saving when using two materials as anode electrocatalysts.
T2  - International Journal of Hydrogen Energy
T1  - Boosting electrocatalysis of oxygen reduction and evolution reactions with cost-effective cobalt and nitrogen-doped carbons prepared by simple carbonization of ionic liquids
VL  - 47
IS  - 33
SP  - 14847
EP  - 14858
DO  - 10.1016/j.ijhydene.2022.02.225
ER  - 

@article{
author = "Zdolšek, Nikola and Vujković, Milica and Metin, Önder and Brković, Snežana and Jocić, Ana and Dimitrijević, Aleksandra and Trtić-Petrović, Tatjana M. and Šljukić, Biljana",
year = "2022",
abstract = "Development of cost-effective, bi-functional carbon electrocatalysts via direct carbonization of ionic liquids (bis(cholinium) tetrachlorocobaltate(II) ([Ch]2[CoCl4]) and bis(1-butyl-3-methylimidazolium) tetrachlorocobaltate(II) ([Bmim]2[CoCl4])) is reported herein for the first time. Carbon electrocatalysts, dual-doped with cobalt and nitrogen, were tested for oxygen reduction (ORR) and oxygen evolution (OER) reactions. Both materials show high bi-functional catalytic activity and excellent stability due to synergistic effects arising from the presence of nitrogen and cobalt. Electrocatalyst prepared by carbonization of [Ch]2[CoCl4] show exceptional activity and selectivity toward ORR. Conversely, electrocatalyst prepared from [Bmim]2[CoCl4] showed a slightly better OER performance indicating that different catalytic sites are responsible for O2 reduction and H2O oxidation. Parent CoO particles with graphitic nitrogen boost activity for ORR, while elemental Co supported by nitrogen atoms is responsible for OER activity. Finally, energy consumption during electrolytic oxygen production was calculated revealing energy saving when using two materials as anode electrocatalysts.",
journal = "International Journal of Hydrogen Energy",
title = "Boosting electrocatalysis of oxygen reduction and evolution reactions with cost-effective cobalt and nitrogen-doped carbons prepared by simple carbonization of ionic liquids",
volume = "47",
number = "33",
pages = "14847-14858",
doi = "10.1016/j.ijhydene.2022.02.225"
}

Zdolšek, N., Vujković, M., Metin, Ö., Brković, S., Jocić, A., Dimitrijević, A., Trtić-Petrović, T. M.,& Šljukić, B.. (2022). Boosting electrocatalysis of oxygen reduction and evolution reactions with cost-effective cobalt and nitrogen-doped carbons prepared by simple carbonization of ionic liquids. in International Journal of Hydrogen Energy, 47(33), 14847-14858.
https://doi.org/10.1016/j.ijhydene.2022.02.225

Zdolšek N, Vujković M, Metin Ö, Brković S, Jocić A, Dimitrijević A, Trtić-Petrović TM, Šljukić B. Boosting electrocatalysis of oxygen reduction and evolution reactions with cost-effective cobalt and nitrogen-doped carbons prepared by simple carbonization of ionic liquids. in International Journal of Hydrogen Energy. 2022;47(33):14847-14858.
doi:10.1016/j.ijhydene.2022.02.225 .

Zdolšek, Nikola, Vujković, Milica, Metin, Önder, Brković, Snežana, Jocić, Ana, Dimitrijević, Aleksandra, Trtić-Petrović, Tatjana M., Šljukić, Biljana, "Boosting electrocatalysis of oxygen reduction and evolution reactions with cost-effective cobalt and nitrogen-doped carbons prepared by simple carbonization of ionic liquids" in International Journal of Hydrogen Energy, 47, no. 33 (2022):14847-14858,
https://doi.org/10.1016/j.ijhydene.2022.02.225 . .

TY  - CHAP
AU  - Dimitrijević, Aleksandra
AU  - Jocić, Ana
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10728
AB  - Organophosphorus pesticides (OPs) are highly effective pesticides whose usage accounts for approximately 30% of the pesticides used worldwide. However, overusing OPs in addition to their difficult degradation is threatening environmental and human health even at very low concentrations that are below detection limits of the standard analytical techniques. For that reason, great efforts have been placed in developing rapid and effective preparation methods for OPs prior to analysis, as well as in improving the performance of different analytical techniques for OPs detection from various samples. Much of the recent progress in terms of efficiency and sustainability has come from incorporating ionic liquids (ILs) as solvents or in the creation of ILsupported materials for OPs extraction purposes. ILs are liquid molten salts typically composed of bulky and unsymmetrical organic cations and various anions. ILs are non-flammable and non-volatile, have excellent (electro)chemical stability and solvation ability for a wide range of compounds and materials. Owing to a large number of ion combinations, ILs have been referred to as tunable designer solvents, the feature that overcomes the limited selectivity and efficiency of common organic solvents and allows the development of more effective extraction platforms. This review will summarize the main results achieved by the use of IL-based processes in the extraction of OPs as a part of sample preparation (liquid-liquid microextraction and solid-phase microextraction) or in designing different nanocomposites to improve electrochemical performance for the detection of different OPs. Moreover, this review will outline and discuss achievements in nucleophilic degradation of OPs where IL can act as both the nucleophile and solvent. The key accomplishments and future challenges to the role of ILs in OPs analysis and degradation will be discussed, with particular emphasis on the more benign ILs while foreseeing the development of more sustainable processes. © 2022 Nova Science Publishers, Inc.
T2  - Organophosphates: Detection, Exposure and Occurrence. Volume 1: Impact on Health and the Natural Environment
T1  - Ionic Liquids as Promising Media in (Pre)analytical Treatments and Degradation of Organophosphate Pesticides
SP  - 181
EP  - 214
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10728
ER  - 

@inbook{
author = "Dimitrijević, Aleksandra and Jocić, Ana",
year = "2022",
abstract = "Organophosphorus pesticides (OPs) are highly effective pesticides whose usage accounts for approximately 30% of the pesticides used worldwide. However, overusing OPs in addition to their difficult degradation is threatening environmental and human health even at very low concentrations that are below detection limits of the standard analytical techniques. For that reason, great efforts have been placed in developing rapid and effective preparation methods for OPs prior to analysis, as well as in improving the performance of different analytical techniques for OPs detection from various samples. Much of the recent progress in terms of efficiency and sustainability has come from incorporating ionic liquids (ILs) as solvents or in the creation of ILsupported materials for OPs extraction purposes. ILs are liquid molten salts typically composed of bulky and unsymmetrical organic cations and various anions. ILs are non-flammable and non-volatile, have excellent (electro)chemical stability and solvation ability for a wide range of compounds and materials. Owing to a large number of ion combinations, ILs have been referred to as tunable designer solvents, the feature that overcomes the limited selectivity and efficiency of common organic solvents and allows the development of more effective extraction platforms. This review will summarize the main results achieved by the use of IL-based processes in the extraction of OPs as a part of sample preparation (liquid-liquid microextraction and solid-phase microextraction) or in designing different nanocomposites to improve electrochemical performance for the detection of different OPs. Moreover, this review will outline and discuss achievements in nucleophilic degradation of OPs where IL can act as both the nucleophile and solvent. The key accomplishments and future challenges to the role of ILs in OPs analysis and degradation will be discussed, with particular emphasis on the more benign ILs while foreseeing the development of more sustainable processes. © 2022 Nova Science Publishers, Inc.",
journal = "Organophosphates: Detection, Exposure and Occurrence. Volume 1: Impact on Health and the Natural Environment",
booktitle = "Ionic Liquids as Promising Media in (Pre)analytical Treatments and Degradation of Organophosphate Pesticides",
pages = "181-214",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10728"
}

Dimitrijević, A.,& Jocić, A.. (2022). Ionic Liquids as Promising Media in (Pre)analytical Treatments and Degradation of Organophosphate Pesticides. in Organophosphates: Detection, Exposure and Occurrence. Volume 1: Impact on Health and the Natural Environment, 181-214.
https://hdl.handle.net/21.15107/rcub_vinar_10728

Dimitrijević A, Jocić A. Ionic Liquids as Promising Media in (Pre)analytical Treatments and Degradation of Organophosphate Pesticides. in Organophosphates: Detection, Exposure and Occurrence. Volume 1: Impact on Health and the Natural Environment. 2022;:181-214.
https://hdl.handle.net/21.15107/rcub_vinar_10728 .

Dimitrijević, Aleksandra, Jocić, Ana, "Ionic Liquids as Promising Media in (Pre)analytical Treatments and Degradation of Organophosphate Pesticides" in Organophosphates: Detection, Exposure and Occurrence. Volume 1: Impact on Health and the Natural Environment (2022):181-214,
https://hdl.handle.net/21.15107/rcub_vinar_10728 .

TY  - JOUR
AU  - Marić, Slađana
AU  - Jocić, Ana
AU  - Krstić, Aleksandar
AU  - Momčilović, Miloš
AU  - Ignjatović, Ljubiša M.
AU  - Dimitrijević, Aleksandra
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9845
AB  - Unused/expired pharmaceuticals can be regarded as a source of valuable compounds. Valorization of active pharmaceutical ingredients (APIs) from pharmaceutical waste, as an alternative to widely adopted treatment by incineration, is a big challenge in terms of designing green, efficient, scalable and sustainable separation methods. Concerning these demands, this work aimed to investigate and propose new integrated extraction technology based on aqueous biphasic systems (ABS) with eco-friendly components namely, poloxamer (Pluronic PE 6200) and one of two salts (sodium citrate, cholinium dihydrogenphosphate) or ionic liquid (1-butyl-3-methylimidazolium chloride). Liquid-liquid equilibria of each ABS were determined at room temperature followed by partition experiments in the biphasic medium to evaluate the most favorable systems for APIs extraction (acetaminophen and caffeine from one commercial product, and theophylline from the other). The finely designed ABSs were then employed to separate APIs from pharmaceutical solids and fractionate them. The results show that citrate-based ABS induces the strongest salting-out effect leading to extraction of all APIs to the Pluronic-rich phase with high recovery efficiencies between 79.4 and 97.90%; insoluble compounds were removed as residues while hydrophilic excipients remained in the citrate-rich aqueous phase. Ionic liquid/PL6200-based ABS was further applied to fractionate acetaminophen and caffeine toward opposite phases. These results underpin the viability and adjustability of PL6200-based ABSs within an integrated process, by a deftly selected salting-out agent, as a sustainable and efficient alternative platform with the great potential to be implemented on a larger scale.
T2  - Separation and Purification Technology
T1  - Poloxamer-based aqueous biphasic systems in designing an integrated extraction platform for the valorization of pharmaceutical waste
VL  - 275
SP  - 119101
DO  - 10.1016/j.seppur.2021.119101
ER  - 

@article{
author = "Marić, Slađana and Jocić, Ana and Krstić, Aleksandar and Momčilović, Miloš and Ignjatović, Ljubiša M. and Dimitrijević, Aleksandra",
year = "2021",
abstract = "Unused/expired pharmaceuticals can be regarded as a source of valuable compounds. Valorization of active pharmaceutical ingredients (APIs) from pharmaceutical waste, as an alternative to widely adopted treatment by incineration, is a big challenge in terms of designing green, efficient, scalable and sustainable separation methods. Concerning these demands, this work aimed to investigate and propose new integrated extraction technology based on aqueous biphasic systems (ABS) with eco-friendly components namely, poloxamer (Pluronic PE 6200) and one of two salts (sodium citrate, cholinium dihydrogenphosphate) or ionic liquid (1-butyl-3-methylimidazolium chloride). Liquid-liquid equilibria of each ABS were determined at room temperature followed by partition experiments in the biphasic medium to evaluate the most favorable systems for APIs extraction (acetaminophen and caffeine from one commercial product, and theophylline from the other). The finely designed ABSs were then employed to separate APIs from pharmaceutical solids and fractionate them. The results show that citrate-based ABS induces the strongest salting-out effect leading to extraction of all APIs to the Pluronic-rich phase with high recovery efficiencies between 79.4 and 97.90%; insoluble compounds were removed as residues while hydrophilic excipients remained in the citrate-rich aqueous phase. Ionic liquid/PL6200-based ABS was further applied to fractionate acetaminophen and caffeine toward opposite phases. These results underpin the viability and adjustability of PL6200-based ABSs within an integrated process, by a deftly selected salting-out agent, as a sustainable and efficient alternative platform with the great potential to be implemented on a larger scale.",
journal = "Separation and Purification Technology",
title = "Poloxamer-based aqueous biphasic systems in designing an integrated extraction platform for the valorization of pharmaceutical waste",
volume = "275",
pages = "119101",
doi = "10.1016/j.seppur.2021.119101"
}

Marić, S., Jocić, A., Krstić, A., Momčilović, M., Ignjatović, L. M.,& Dimitrijević, A.. (2021). Poloxamer-based aqueous biphasic systems in designing an integrated extraction platform for the valorization of pharmaceutical waste. in Separation and Purification Technology, 275, 119101.
https://doi.org/10.1016/j.seppur.2021.119101

Marić S, Jocić A, Krstić A, Momčilović M, Ignjatović LM, Dimitrijević A. Poloxamer-based aqueous biphasic systems in designing an integrated extraction platform for the valorization of pharmaceutical waste. in Separation and Purification Technology. 2021;275:119101.
doi:10.1016/j.seppur.2021.119101 .

Marić, Slađana, Jocić, Ana, Krstić, Aleksandar, Momčilović, Miloš, Ignjatović, Ljubiša M., Dimitrijević, Aleksandra, "Poloxamer-based aqueous biphasic systems in designing an integrated extraction platform for the valorization of pharmaceutical waste" in Separation and Purification Technology, 275 (2021):119101,
https://doi.org/10.1016/j.seppur.2021.119101 . .

TY  - JOUR
AU  - Jocić, Ana
AU  - Marić, Slađana
AU  - Dimitrijević, Aleksandra
AU  - Tot, Aleksandar
AU  - Gadžurić, Slobodan
AU  - Vraneš, Milan
AU  - Trtić-Petrović, Tatjana M.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8835
AB  - This work addresses use of a set of 2-hydroxypropylammonium based protic ionic liquids (PILs) as adjuvants in the aqueous biphasic system (ABS) composed of polyethylene glycol, with molecular weight 2000 g/mol (PEG 2000) and potassium carbonate. The phase diagrams were determined at 25 °C for ABS without and with the addition of 5 wt% of PIL. Comparative analysis of solubility curves indicates that PILs influence liquid-liquid equilibria of PEG 2000-K2CO3 ABS by heightening the hydrophilicity of a PEG-rich phase in various degrees. The compositions of the phases (tie lines) were determined for the selected ABS mixture composition, 26 wt% of PEG 2000 + 10 wt% of K2CO3, without and with 5 wt% of PILs, that is further used for the separation studies. The distribution of PILs between two phases is mainly dependent on specific PEG-PIL interactions and on the PIL content in ABS mixture. The experimental results are supported by molecular simulations that contributed to a broader picture of underlying effects of PILs as adjuvants on ABS formation. The partition of four dye compounds, Remazol Brilliant Blue R (RBBR), Orange II (OII), Rhodamine B (RB) and Congo Red (CR), as probe molecules with different intrinsic properties, was investigated. Obtained results show that the addition of PILs can improve the extraction of hydrophilic and charged compounds as OII, RBBR and CR in PEG-rich phase. On the other hand, it promotes the extraction of hydrophobic and neutral solutes as RB in salt-rich phase. By the addition of the most hydrophilic 3-chloropropanoate based PIL in the PEG 2000-K2CO3 ABS 12 times higher separation factor for OII and RB was achieved. © 2020 Elsevier B.V.
T2  - Journal of Molecular Liquids
T1  - Protic ionic liquids as adjuvants to enhance extraction and separation performance of diverse polarity compounds in PEG-salt based aqueous biphasic system
VL  - 303
SP  - 112484
DO  - 10.1016/j.molliq.2020.112484
ER  - 

@article{
author = "Jocić, Ana and Marić, Slađana and Dimitrijević, Aleksandra and Tot, Aleksandar and Gadžurić, Slobodan and Vraneš, Milan and Trtić-Petrović, Tatjana M.",
year = "2020",
abstract = "This work addresses use of a set of 2-hydroxypropylammonium based protic ionic liquids (PILs) as adjuvants in the aqueous biphasic system (ABS) composed of polyethylene glycol, with molecular weight 2000 g/mol (PEG 2000) and potassium carbonate. The phase diagrams were determined at 25 °C for ABS without and with the addition of 5 wt% of PIL. Comparative analysis of solubility curves indicates that PILs influence liquid-liquid equilibria of PEG 2000-K2CO3 ABS by heightening the hydrophilicity of a PEG-rich phase in various degrees. The compositions of the phases (tie lines) were determined for the selected ABS mixture composition, 26 wt% of PEG 2000 + 10 wt% of K2CO3, without and with 5 wt% of PILs, that is further used for the separation studies. The distribution of PILs between two phases is mainly dependent on specific PEG-PIL interactions and on the PIL content in ABS mixture. The experimental results are supported by molecular simulations that contributed to a broader picture of underlying effects of PILs as adjuvants on ABS formation. The partition of four dye compounds, Remazol Brilliant Blue R (RBBR), Orange II (OII), Rhodamine B (RB) and Congo Red (CR), as probe molecules with different intrinsic properties, was investigated. Obtained results show that the addition of PILs can improve the extraction of hydrophilic and charged compounds as OII, RBBR and CR in PEG-rich phase. On the other hand, it promotes the extraction of hydrophobic and neutral solutes as RB in salt-rich phase. By the addition of the most hydrophilic 3-chloropropanoate based PIL in the PEG 2000-K2CO3 ABS 12 times higher separation factor for OII and RB was achieved. © 2020 Elsevier B.V.",
journal = "Journal of Molecular Liquids",
title = "Protic ionic liquids as adjuvants to enhance extraction and separation performance of diverse polarity compounds in PEG-salt based aqueous biphasic system",
volume = "303",
pages = "112484",
doi = "10.1016/j.molliq.2020.112484"
}

Jocić, A., Marić, S., Dimitrijević, A., Tot, A., Gadžurić, S., Vraneš, M.,& Trtić-Petrović, T. M.. (2020). Protic ionic liquids as adjuvants to enhance extraction and separation performance of diverse polarity compounds in PEG-salt based aqueous biphasic system. in Journal of Molecular Liquids, 303, 112484.
https://doi.org/10.1016/j.molliq.2020.112484

Jocić A, Marić S, Dimitrijević A, Tot A, Gadžurić S, Vraneš M, Trtić-Petrović TM. Protic ionic liquids as adjuvants to enhance extraction and separation performance of diverse polarity compounds in PEG-salt based aqueous biphasic system. in Journal of Molecular Liquids. 2020;303:112484.
doi:10.1016/j.molliq.2020.112484 .

Jocić, Ana, Marić, Slađana, Dimitrijević, Aleksandra, Tot, Aleksandar, Gadžurić, Slobodan, Vraneš, Milan, Trtić-Petrović, Tatjana M., "Protic ionic liquids as adjuvants to enhance extraction and separation performance of diverse polarity compounds in PEG-salt based aqueous biphasic system" in Journal of Molecular Liquids, 303 (2020):112484,
https://doi.org/10.1016/j.molliq.2020.112484 . .

TY  - JOUR
AU  - Dimitrijević, Aleksandra
AU  - Мilićević, Jelena
AU  - Jocić, Ana
AU  - Marić, Slađana
AU  - Trtić-Petrović, Tatjana M.
AU  - Papović, Snežana
AU  - Tot, Aleksandar
AU  - Gadžurić, Slobodan
AU  - Vraneš, Milan
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8833
AB  - Despite a large collection of publications dealing with the characterization of ionic liquid-based aqueous biphasic systems (IL-ABS), a gap still exists regarding the impact of functionalized alkyl side branches and IL positional isomers on phase equilibria. Therefore, this work addresses the investigation of the ability of different methyl substituted pyridinium based ILs on the formation of ABSs with K3PO4. We evaluated the impact of (i) functional groups (hydroxyl or ether) embed in side alkyl chains of pyridinium cations, (ii) positional isomerism of methyl group (ortho, meta and para) and (iii) the IL cation core. Ternary phase diagrams of the ABSs formed by these ILs and K3PO4 and the appropriate tie lines were determined and presented. It is shown that the presence of functionalized alkyl chain largely affects the salting-in behavior of ILs (ILs with the oxygen groups are more difficult to form ABS) while more subtle differences were observed among positional isomers. Based on the obtained results it is concluded that change of biphasic area of ABS is the manifestation of the altered affinity of ILs for water as a consequence of cation structure. Moreover, aiming at gathering a broader picture of the relationship between ILs structure and ABS properties, molecular simulations were performed, and it was showed that the obtained results are consistent with the experimental results. © 2020 Elsevier B.V.
T2  - Fluid Phase Equilibria
T1  - Further insight into the influence of functionalization and positional isomerism of pyridinium ionic liquids on the aqueous two-phase system equilibria
VL  - 512
SP  - 112520
DO  - 10.1016/j.fluid.2020.112520
ER  - 

@article{
author = "Dimitrijević, Aleksandra and Мilićević, Jelena and Jocić, Ana and Marić, Slađana and Trtić-Petrović, Tatjana M. and Papović, Snežana and Tot, Aleksandar and Gadžurić, Slobodan and Vraneš, Milan",
year = "2020",
abstract = "Despite a large collection of publications dealing with the characterization of ionic liquid-based aqueous biphasic systems (IL-ABS), a gap still exists regarding the impact of functionalized alkyl side branches and IL positional isomers on phase equilibria. Therefore, this work addresses the investigation of the ability of different methyl substituted pyridinium based ILs on the formation of ABSs with K3PO4. We evaluated the impact of (i) functional groups (hydroxyl or ether) embed in side alkyl chains of pyridinium cations, (ii) positional isomerism of methyl group (ortho, meta and para) and (iii) the IL cation core. Ternary phase diagrams of the ABSs formed by these ILs and K3PO4 and the appropriate tie lines were determined and presented. It is shown that the presence of functionalized alkyl chain largely affects the salting-in behavior of ILs (ILs with the oxygen groups are more difficult to form ABS) while more subtle differences were observed among positional isomers. Based on the obtained results it is concluded that change of biphasic area of ABS is the manifestation of the altered affinity of ILs for water as a consequence of cation structure. Moreover, aiming at gathering a broader picture of the relationship between ILs structure and ABS properties, molecular simulations were performed, and it was showed that the obtained results are consistent with the experimental results. © 2020 Elsevier B.V.",
journal = "Fluid Phase Equilibria",
title = "Further insight into the influence of functionalization and positional isomerism of pyridinium ionic liquids on the aqueous two-phase system equilibria",
volume = "512",
pages = "112520",
doi = "10.1016/j.fluid.2020.112520"
}

Dimitrijević, A., Мilićević, J., Jocić, A., Marić, S., Trtić-Petrović, T. M., Papović, S., Tot, A., Gadžurić, S.,& Vraneš, M.. (2020). Further insight into the influence of functionalization and positional isomerism of pyridinium ionic liquids on the aqueous two-phase system equilibria. in Fluid Phase Equilibria, 512, 112520.
https://doi.org/10.1016/j.fluid.2020.112520

Dimitrijević A, Мilićević J, Jocić A, Marić S, Trtić-Petrović TM, Papović S, Tot A, Gadžurić S, Vraneš M. Further insight into the influence of functionalization and positional isomerism of pyridinium ionic liquids on the aqueous two-phase system equilibria. in Fluid Phase Equilibria. 2020;512:112520.
doi:10.1016/j.fluid.2020.112520 .

Dimitrijević, Aleksandra, Мilićević, Jelena, Jocić, Ana, Marić, Slađana, Trtić-Petrović, Tatjana M., Papović, Snežana, Tot, Aleksandar, Gadžurić, Slobodan, Vraneš, Milan, "Further insight into the influence of functionalization and positional isomerism of pyridinium ionic liquids on the aqueous two-phase system equilibria" in Fluid Phase Equilibria, 512 (2020):112520,
https://doi.org/10.1016/j.fluid.2020.112520 . .

TY  - JOUR
AU  - Dimitrijević, Aleksandra
AU  - Tavares, Ana Paula M.
AU  - Almeida, Mafalda R.
AU  - Vraneš, Milan
AU  - Sousa, Ana C. A.
AU  - Cristovão, Ana Clara
AU  - Trtić-Petrović, Tatjana M.
AU  - Gadžurić, Slobodan
AU  - Freire, Mara G.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8974
AB  - Expired energy drinks are rich in bioactive value-added compounds that can be recovered and reused in order to valorize food waste within a circular economy perspective. However, to accomplish such requirements, it is necessary to develop sustainable extraction and recovery processes, which must consist of decreasing the number of steps required or developing integrated strategies. In this work, novel aqueous biphasic systems (ABS) composed of ionic liquids (ILs) and a biocompatible polymer polypropylene glycol (400 g.mol(-1), PPG 400) were studied for the simultaneous extraction and recovery of three value-added compounds, namely, caffeine, taurine, and niacin, from expired energy drinks. ILs were designed and synthesized in order to have similar anions to the target compounds, thus allowing enhanced selectivity and biological activity, while avoiding an extra step of separation of these high-value compounds from the IL-rich phase. To this end, cholinium-based ILs comprising the anions lactate, pyruvate, taurate, and nicotinate were synthesized, and their cytotoxicity and ecotoxicity credentials were evaluated. Overall, taurine and niacin are majorly enriched in the IL-rich phase, while caffeine preferentially migrates in the majority of the cases toward the PPG-rich phase. However, caffeine also partitions to the IL-rich phase in the ABS formed by cholinium pyruvate or cholinium nicotinate. The ABS formed by cholinium nicotinate and PPG 400 is the best system identified, allowing the almost complete recovery (recovery efficiencies > 82%) of all target compounds into the IL-rich phase in one step. Furthermore, cholinium nicotinate exhibits marginal cytotoxic potential and is harmless from an ecotoxicological point of view. This system is thus a promising platform to simultaneously extract, recover, and reuse value-added compounds from expired energy drinks without the need of removing the IL or recovering the target compounds from the IL-rich phase, thus contributing to a sustainable and circular food economy.
T2  - ACS Sustainable Chemistry and Engineering
T1  - Valorization of Expired Energy Drinks by Designed and Integrated Ionic Liquid-Based Aqueous Biphasic Systems
VL  - 8
IS  - 14
SP  - 5683
EP  - 5692
DO  - 10.1021/acssuschemeng.0c00429
ER  - 

@article{
author = "Dimitrijević, Aleksandra and Tavares, Ana Paula M. and Almeida, Mafalda R. and Vraneš, Milan and Sousa, Ana C. A. and Cristovão, Ana Clara and Trtić-Petrović, Tatjana M. and Gadžurić, Slobodan and Freire, Mara G.",
year = "2020",
abstract = "Expired energy drinks are rich in bioactive value-added compounds that can be recovered and reused in order to valorize food waste within a circular economy perspective. However, to accomplish such requirements, it is necessary to develop sustainable extraction and recovery processes, which must consist of decreasing the number of steps required or developing integrated strategies. In this work, novel aqueous biphasic systems (ABS) composed of ionic liquids (ILs) and a biocompatible polymer polypropylene glycol (400 g.mol(-1), PPG 400) were studied for the simultaneous extraction and recovery of three value-added compounds, namely, caffeine, taurine, and niacin, from expired energy drinks. ILs were designed and synthesized in order to have similar anions to the target compounds, thus allowing enhanced selectivity and biological activity, while avoiding an extra step of separation of these high-value compounds from the IL-rich phase. To this end, cholinium-based ILs comprising the anions lactate, pyruvate, taurate, and nicotinate were synthesized, and their cytotoxicity and ecotoxicity credentials were evaluated. Overall, taurine and niacin are majorly enriched in the IL-rich phase, while caffeine preferentially migrates in the majority of the cases toward the PPG-rich phase. However, caffeine also partitions to the IL-rich phase in the ABS formed by cholinium pyruvate or cholinium nicotinate. The ABS formed by cholinium nicotinate and PPG 400 is the best system identified, allowing the almost complete recovery (recovery efficiencies > 82%) of all target compounds into the IL-rich phase in one step. Furthermore, cholinium nicotinate exhibits marginal cytotoxic potential and is harmless from an ecotoxicological point of view. This system is thus a promising platform to simultaneously extract, recover, and reuse value-added compounds from expired energy drinks without the need of removing the IL or recovering the target compounds from the IL-rich phase, thus contributing to a sustainable and circular food economy.",
journal = "ACS Sustainable Chemistry and Engineering",
title = "Valorization of Expired Energy Drinks by Designed and Integrated Ionic Liquid-Based Aqueous Biphasic Systems",
volume = "8",
number = "14",
pages = "5683-5692",
doi = "10.1021/acssuschemeng.0c00429"
}

Dimitrijević, A., Tavares, A. P. M., Almeida, M. R., Vraneš, M., Sousa, A. C. A., Cristovão, A. C., Trtić-Petrović, T. M., Gadžurić, S.,& Freire, M. G.. (2020). Valorization of Expired Energy Drinks by Designed and Integrated Ionic Liquid-Based Aqueous Biphasic Systems. in ACS Sustainable Chemistry and Engineering, 8(14), 5683-5692.
https://doi.org/10.1021/acssuschemeng.0c00429

Dimitrijević A, Tavares APM, Almeida MR, Vraneš M, Sousa ACA, Cristovão AC, Trtić-Petrović TM, Gadžurić S, Freire MG. Valorization of Expired Energy Drinks by Designed and Integrated Ionic Liquid-Based Aqueous Biphasic Systems. in ACS Sustainable Chemistry and Engineering. 2020;8(14):5683-5692.
doi:10.1021/acssuschemeng.0c00429 .

Dimitrijević, Aleksandra, Tavares, Ana Paula M., Almeida, Mafalda R., Vraneš, Milan, Sousa, Ana C. A., Cristovão, Ana Clara, Trtić-Petrović, Tatjana M., Gadžurić, Slobodan, Freire, Mara G., "Valorization of Expired Energy Drinks by Designed and Integrated Ionic Liquid-Based Aqueous Biphasic Systems" in ACS Sustainable Chemistry and Engineering, 8, no. 14 (2020):5683-5692,
https://doi.org/10.1021/acssuschemeng.0c00429 . .

TY  - JOUR
AU  - Dimitrijević, Aleksandra
AU  - Tavares, Ana Paula M.
AU  - Jocić, Ana
AU  - Marić, Slađana
AU  - Trtić-Petrović, Tatjana M.
AU  - Gadžurić, Slobodan
AU  - Freire, Mara G.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8995
AB  - Aqueous biphasic systems (ABS) formed by copolymers and ionic liquids (ILs) have demonstrated to be effective separation platforms, but there is still a gap on the complete understanding of the molecular-level mechanisms ruling the two-phase formation for this type of systems. This work addresses the determination of the liquid–liquid equilibrium of ABS composed of cholinium-based salts or cholinium-based ILs and the triblock copolymer Pluronic PE6200 (PL6200). It is demonstrated that PL6200 can form ABS with all investigated cholinium-based salts or ILs, contrarily to most poly(ethylene)glycol polymers, which is due to the presence of hydrophobic propylene oxide (PO) blocks. From the phase diagrams behavior and IL/salt anions properties, it is shown that the formation of ABS with cholinium-based salts is ruled by the anions polar surface and ability to be hydrated, whereas in systems comprising ILs van der Waals interactions between the copolymer and the IL cannot be discarded. The partition of a series of alkaloids in these systems, namely caffeine, nicotine, theophylline, and theobromine, was additionally appraised. It is shown that caffeine, theophylline, and theobromine preferentially migrate to the more hydrophobic PL6200-rich phase, and that their partition depends on the water content in the respective phase, being ruled by the phases’ hydrophobicity. On the other hand, nicotine, with the most prominent hydrophobic character amongst the studied alkaloids, preferentially migrates to the salt- or IL-rich phase, in which interactions occurring between this alkaloid and the IL/salt cannot be discarded. The ABS formed by cholinium dihydrogenphosphate is the most selective system identified to separate nicotine from the remaining alkaloids, giving some insights into their investigation as separation platforms for alkaloids from natural extracts.
T2  - Separation and Purification Technology
T1  - Aqueous biphasic systems comprising copolymers and cholinium-based salts or ionic liquids: Insights on the mechanisms responsible for their creation
VL  - 248
SP  - 117050
DO  - 10.1016/j.seppur.2020.117050
ER  - 

@article{
author = "Dimitrijević, Aleksandra and Tavares, Ana Paula M. and Jocić, Ana and Marić, Slađana and Trtić-Petrović, Tatjana M. and Gadžurić, Slobodan and Freire, Mara G.",
year = "2020",
abstract = "Aqueous biphasic systems (ABS) formed by copolymers and ionic liquids (ILs) have demonstrated to be effective separation platforms, but there is still a gap on the complete understanding of the molecular-level mechanisms ruling the two-phase formation for this type of systems. This work addresses the determination of the liquid–liquid equilibrium of ABS composed of cholinium-based salts or cholinium-based ILs and the triblock copolymer Pluronic PE6200 (PL6200). It is demonstrated that PL6200 can form ABS with all investigated cholinium-based salts or ILs, contrarily to most poly(ethylene)glycol polymers, which is due to the presence of hydrophobic propylene oxide (PO) blocks. From the phase diagrams behavior and IL/salt anions properties, it is shown that the formation of ABS with cholinium-based salts is ruled by the anions polar surface and ability to be hydrated, whereas in systems comprising ILs van der Waals interactions between the copolymer and the IL cannot be discarded. The partition of a series of alkaloids in these systems, namely caffeine, nicotine, theophylline, and theobromine, was additionally appraised. It is shown that caffeine, theophylline, and theobromine preferentially migrate to the more hydrophobic PL6200-rich phase, and that their partition depends on the water content in the respective phase, being ruled by the phases’ hydrophobicity. On the other hand, nicotine, with the most prominent hydrophobic character amongst the studied alkaloids, preferentially migrates to the salt- or IL-rich phase, in which interactions occurring between this alkaloid and the IL/salt cannot be discarded. The ABS formed by cholinium dihydrogenphosphate is the most selective system identified to separate nicotine from the remaining alkaloids, giving some insights into their investigation as separation platforms for alkaloids from natural extracts.",
journal = "Separation and Purification Technology",
title = "Aqueous biphasic systems comprising copolymers and cholinium-based salts or ionic liquids: Insights on the mechanisms responsible for their creation",
volume = "248",
pages = "117050",
doi = "10.1016/j.seppur.2020.117050"
}

Dimitrijević, A., Tavares, A. P. M., Jocić, A., Marić, S., Trtić-Petrović, T. M., Gadžurić, S.,& Freire, M. G.. (2020). Aqueous biphasic systems comprising copolymers and cholinium-based salts or ionic liquids: Insights on the mechanisms responsible for their creation. in Separation and Purification Technology, 248, 117050.
https://doi.org/10.1016/j.seppur.2020.117050

Dimitrijević A, Tavares APM, Jocić A, Marić S, Trtić-Petrović TM, Gadžurić S, Freire MG. Aqueous biphasic systems comprising copolymers and cholinium-based salts or ionic liquids: Insights on the mechanisms responsible for their creation. in Separation and Purification Technology. 2020;248:117050.
doi:10.1016/j.seppur.2020.117050 .

Dimitrijević, Aleksandra, Tavares, Ana Paula M., Jocić, Ana, Marić, Slađana, Trtić-Petrović, Tatjana M., Gadžurić, Slobodan, Freire, Mara G., "Aqueous biphasic systems comprising copolymers and cholinium-based salts or ionic liquids: Insights on the mechanisms responsible for their creation" in Separation and Purification Technology, 248 (2020):117050,
https://doi.org/10.1016/j.seppur.2020.117050 . .

TY  - JOUR
AU  - Dimitrijević, Aleksandra
AU  - Jocić, Ana
AU  - Zec, Nebojša
AU  - Tot, Aleksandar
AU  - Papović, Snežana
AU  - Gadžurić, Slobodan
AU  - Vraneš, Milan
AU  - Trtić-Petrović, Tatjana M.
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8157
AB  - The novel aqueous biphasic systems based on symmetric imidazolium ionic liquids (IL-ABSs)for the extraction of toxic and resistive dyes from water was studied. The cation symmetricity of ILs strongly influence the outstanding ability of 1,3-dibutylimidazolium dicyanamide, [bbim][dca], to generate ABS with the exceptionally low amount of eco-friendly citrate salt. A remarkable potential of [bbim][dca]/citrate based ABS to remove Orange II from wastewater with concentration up to 1000 fold and efficiency above 99.4% in a single step was achieved. The improved safety of proposed method nominates it as promising future strategy for pollution prevention. © 2019 The Korean Society of Industrial and Engineering Chemistry
T2  - Journal of Industrial and Engineering Chemistry
T1  - Improved single-step extraction performance of aqueous biphasic systems using novel symmetric ionic liquids for the decolorisation of toxic dye effluents
VL  - 76
SP  - 500
EP  - 507
DO  - 10.1016/j.jiec.2019.04.017
ER  - 

@article{
author = "Dimitrijević, Aleksandra and Jocić, Ana and Zec, Nebojša and Tot, Aleksandar and Papović, Snežana and Gadžurić, Slobodan and Vraneš, Milan and Trtić-Petrović, Tatjana M.",
year = "2019",
abstract = "The novel aqueous biphasic systems based on symmetric imidazolium ionic liquids (IL-ABSs)for the extraction of toxic and resistive dyes from water was studied. The cation symmetricity of ILs strongly influence the outstanding ability of 1,3-dibutylimidazolium dicyanamide, [bbim][dca], to generate ABS with the exceptionally low amount of eco-friendly citrate salt. A remarkable potential of [bbim][dca]/citrate based ABS to remove Orange II from wastewater with concentration up to 1000 fold and efficiency above 99.4% in a single step was achieved. The improved safety of proposed method nominates it as promising future strategy for pollution prevention. © 2019 The Korean Society of Industrial and Engineering Chemistry",
journal = "Journal of Industrial and Engineering Chemistry",
title = "Improved single-step extraction performance of aqueous biphasic systems using novel symmetric ionic liquids for the decolorisation of toxic dye effluents",
volume = "76",
pages = "500-507",
doi = "10.1016/j.jiec.2019.04.017"
}

Dimitrijević, A., Jocić, A., Zec, N., Tot, A., Papović, S., Gadžurić, S., Vraneš, M.,& Trtić-Petrović, T. M.. (2019). Improved single-step extraction performance of aqueous biphasic systems using novel symmetric ionic liquids for the decolorisation of toxic dye effluents. in Journal of Industrial and Engineering Chemistry, 76, 500-507.
https://doi.org/10.1016/j.jiec.2019.04.017

Dimitrijević A, Jocić A, Zec N, Tot A, Papović S, Gadžurić S, Vraneš M, Trtić-Petrović TM. Improved single-step extraction performance of aqueous biphasic systems using novel symmetric ionic liquids for the decolorisation of toxic dye effluents. in Journal of Industrial and Engineering Chemistry. 2019;76:500-507.
doi:10.1016/j.jiec.2019.04.017 .

Dimitrijević, Aleksandra, Jocić, Ana, Zec, Nebojša, Tot, Aleksandar, Papović, Snežana, Gadžurić, Slobodan, Vraneš, Milan, Trtić-Petrović, Tatjana M., "Improved single-step extraction performance of aqueous biphasic systems using novel symmetric ionic liquids for the decolorisation of toxic dye effluents" in Journal of Industrial and Engineering Chemistry, 76 (2019):500-507,
https://doi.org/10.1016/j.jiec.2019.04.017 . .

TY  - JOUR
AU  - Dimitrijević, Aleksandra
AU  - Jocić, Ana
AU  - Zec, Nebojša
AU  - Tot, Aleksandar
AU  - Papović, Snežana
AU  - Gadžurić, Slobodan
AU  - Vraneš, Milan
AU  - Trtić-Petrović, Tatjana M.
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8168
AB  - The novel aqueous biphasic systems based on symmetric imidazolium ionic liquids (IL-ABSs)for the extraction of toxic and resistive dyes from water was studied. The cation symmetricity of ILs strongly influence the outstanding ability of 1,3-dibutylimidazolium dicyanamide, [bbim][dca], to generate ABS with the exceptionally low amount of eco-friendly citrate salt. A remarkable potential of [bbim][dca]/citrate based ABS to remove Orange II from wastewater with concentration up to 1000 fold and efficiency above 99.4% in a single step was achieved. The improved safety of proposed method nominates it as promising future strategy for pollution prevention.
T2  - Journal of Industrial and Engineering Chemistry
T1  - Improved single-step extraction performance of aqueous biphasic systems using novel symmetric ionic liquids for the decolorisation of toxic dye effluents
VL  - 76
SP  - 500
EP  - 507
DO  - 10.1016/j.jiec.2019.04.017
ER  - 

@article{
author = "Dimitrijević, Aleksandra and Jocić, Ana and Zec, Nebojša and Tot, Aleksandar and Papović, Snežana and Gadžurić, Slobodan and Vraneš, Milan and Trtić-Petrović, Tatjana M.",
year = "2019",
abstract = "The novel aqueous biphasic systems based on symmetric imidazolium ionic liquids (IL-ABSs)for the extraction of toxic and resistive dyes from water was studied. The cation symmetricity of ILs strongly influence the outstanding ability of 1,3-dibutylimidazolium dicyanamide, [bbim][dca], to generate ABS with the exceptionally low amount of eco-friendly citrate salt. A remarkable potential of [bbim][dca]/citrate based ABS to remove Orange II from wastewater with concentration up to 1000 fold and efficiency above 99.4% in a single step was achieved. The improved safety of proposed method nominates it as promising future strategy for pollution prevention.",
journal = "Journal of Industrial and Engineering Chemistry",
title = "Improved single-step extraction performance of aqueous biphasic systems using novel symmetric ionic liquids for the decolorisation of toxic dye effluents",
volume = "76",
pages = "500-507",
doi = "10.1016/j.jiec.2019.04.017"
}

Dimitrijević, A., Jocić, A., Zec, N., Tot, A., Papović, S., Gadžurić, S., Vraneš, M.,& Trtić-Petrović, T. M.. (2019). Improved single-step extraction performance of aqueous biphasic systems using novel symmetric ionic liquids for the decolorisation of toxic dye effluents. in Journal of Industrial and Engineering Chemistry, 76, 500-507.
https://doi.org/10.1016/j.jiec.2019.04.017

Dimitrijević A, Jocić A, Zec N, Tot A, Papović S, Gadžurić S, Vraneš M, Trtić-Petrović TM. Improved single-step extraction performance of aqueous biphasic systems using novel symmetric ionic liquids for the decolorisation of toxic dye effluents. in Journal of Industrial and Engineering Chemistry. 2019;76:500-507.
doi:10.1016/j.jiec.2019.04.017 .

Dimitrijević, Aleksandra, Jocić, Ana, Zec, Nebojša, Tot, Aleksandar, Papović, Snežana, Gadžurić, Slobodan, Vraneš, Milan, Trtić-Petrović, Tatjana M., "Improved single-step extraction performance of aqueous biphasic systems using novel symmetric ionic liquids for the decolorisation of toxic dye effluents" in Journal of Industrial and Engineering Chemistry, 76 (2019):500-507,
https://doi.org/10.1016/j.jiec.2019.04.017 . .

TY  - JOUR
AU  - Zdolšek, Nikola
AU  - Dimitrijević, Aleksandra
AU  - Bendova, Magdalena
AU  - Krstić, Jugoslav B.
AU  - Rocha, Raquel P.
AU  - Figueiredo, Jose L.
AU  - Bajuk-Bogdanović, Danica V.
AU  - Trtić-Petrović, Tatjana M.
AU  - Šljukić, Biljana
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9881
AB  - Carbon materials, prepared by using different methods with ionic liquids, are compared as electrocatalysts for the oxygen reduction reaction (ORR). Materials were synthesized through the hydrothermal carbonization of glucose and by using the same method in the presence of 1-butyl-3-methylimidazolium methanesulfonate [bmim][MeSO3] as an additive. Another two carbon-based materials were prepared by using ionic-liquid-based methods: ionothermal carbonization of glucose using [bmim][MeSO3] as a recyclable medium for the carbonization reaction and by direct carbonization of the ionic liquid in a one-step method using [bmim][MeSO3] as the precursor for N- and S-doped porous carbon (Carb-IL). Characterization results showed the possibility of morphology and porosity control by using [bmim][MeSO3]. All materials were subsequently tested for the ORR in alkaline media. Carb-IL showed enhanced and stable electrocatalytic ORR activity, even in the presence of methanol, ethanol, and borohydride, opening the possibility for its application in fuel cells.
T2  - ChemElectroChem
T1  - Electrocatalytic Activity of Ionic-Liquid-Derived Porous Carbon Materials for the Oxygen Reduction Reaction
VL  - 5
IS  - 7
SP  - 1037
EP  - 1046
DO  - 10.1002/celc.201701369
ER  - 

@article{
author = "Zdolšek, Nikola and Dimitrijević, Aleksandra and Bendova, Magdalena and Krstić, Jugoslav B. and Rocha, Raquel P. and Figueiredo, Jose L. and Bajuk-Bogdanović, Danica V. and Trtić-Petrović, Tatjana M. and Šljukić, Biljana",
year = "2018",
abstract = "Carbon materials, prepared by using different methods with ionic liquids, are compared as electrocatalysts for the oxygen reduction reaction (ORR). Materials were synthesized through the hydrothermal carbonization of glucose and by using the same method in the presence of 1-butyl-3-methylimidazolium methanesulfonate [bmim][MeSO3] as an additive. Another two carbon-based materials were prepared by using ionic-liquid-based methods: ionothermal carbonization of glucose using [bmim][MeSO3] as a recyclable medium for the carbonization reaction and by direct carbonization of the ionic liquid in a one-step method using [bmim][MeSO3] as the precursor for N- and S-doped porous carbon (Carb-IL). Characterization results showed the possibility of morphology and porosity control by using [bmim][MeSO3]. All materials were subsequently tested for the ORR in alkaline media. Carb-IL showed enhanced and stable electrocatalytic ORR activity, even in the presence of methanol, ethanol, and borohydride, opening the possibility for its application in fuel cells.",
journal = "ChemElectroChem",
title = "Electrocatalytic Activity of Ionic-Liquid-Derived Porous Carbon Materials for the Oxygen Reduction Reaction",
volume = "5",
number = "7",
pages = "1037-1046",
doi = "10.1002/celc.201701369"
}

Zdolšek, N., Dimitrijević, A., Bendova, M., Krstić, J. B., Rocha, R. P., Figueiredo, J. L., Bajuk-Bogdanović, D. V., Trtić-Petrović, T. M.,& Šljukić, B.. (2018). Electrocatalytic Activity of Ionic-Liquid-Derived Porous Carbon Materials for the Oxygen Reduction Reaction. in ChemElectroChem, 5(7), 1037-1046.
https://doi.org/10.1002/celc.201701369

Zdolšek N, Dimitrijević A, Bendova M, Krstić JB, Rocha RP, Figueiredo JL, Bajuk-Bogdanović DV, Trtić-Petrović TM, Šljukić B. Electrocatalytic Activity of Ionic-Liquid-Derived Porous Carbon Materials for the Oxygen Reduction Reaction. in ChemElectroChem. 2018;5(7):1037-1046.
doi:10.1002/celc.201701369 .

Zdolšek, Nikola, Dimitrijević, Aleksandra, Bendova, Magdalena, Krstić, Jugoslav B., Rocha, Raquel P., Figueiredo, Jose L., Bajuk-Bogdanović, Danica V., Trtić-Petrović, Tatjana M., Šljukić, Biljana, "Electrocatalytic Activity of Ionic-Liquid-Derived Porous Carbon Materials for the Oxygen Reduction Reaction" in ChemElectroChem, 5, no. 7 (2018):1037-1046,
https://doi.org/10.1002/celc.201701369 . .

TY  - JOUR
AU  - Zec, Nebojša
AU  - Vraneš, Milan
AU  - Bešter-Rogač, Marija
AU  - Trtić-Petrović, Tatjana M.
AU  - Dimitrijević, Aleksandra
AU  - Čobanov, Isidora
AU  - Gadžurić, Slobodan
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7660
AB  - In this manuscript eight new 1,3-dialkylimidazolium bromide ionic liquids, {[}CnCmim]{[}Br], were synthesized and characterized. Densities of ionic liquids and their diluted aqueous solutions have been measured over the whole composition range at selected temperatures from (293.15 to 323.15) K and at atmospheric pressure (p = 0.1 MPa). Influence of alkyl chain length and cation symmetry on densities and volumetric properties as well as nature of the interactions in aqueous {[}CnCmim]{[}Br] solutions have been discussed and compared with previously published aqueous {[}C(2)C(4)im]{[}Br] system. Densities of pure bromide based ionic liquids decrease with increasing alkyl chain length on imidazolium cation and depend on total number of methyl group in both side alkyl chains. Apparent molar volumes at infinite dilution of investigated ionic liquids in water increase linearly with increase of the total number of the C atoms in the side alkyl chain. (C) 2018 Elsevier Ltd.
T2  - The Journal of Chemical Thermodynamics
T1  - Influence of the alkyl chain length on densities and volumetric properties of 1,3-dialkylimidazolium bromide ionic liquids and their aqueous solutions
VL  - 121
SP  - 72
EP  - 78
DO  - 10.1016/j.jct.2018.02.001
ER  - 

@article{
author = "Zec, Nebojša and Vraneš, Milan and Bešter-Rogač, Marija and Trtić-Petrović, Tatjana M. and Dimitrijević, Aleksandra and Čobanov, Isidora and Gadžurić, Slobodan",
year = "2018",
abstract = "In this manuscript eight new 1,3-dialkylimidazolium bromide ionic liquids, {[}CnCmim]{[}Br], were synthesized and characterized. Densities of ionic liquids and their diluted aqueous solutions have been measured over the whole composition range at selected temperatures from (293.15 to 323.15) K and at atmospheric pressure (p = 0.1 MPa). Influence of alkyl chain length and cation symmetry on densities and volumetric properties as well as nature of the interactions in aqueous {[}CnCmim]{[}Br] solutions have been discussed and compared with previously published aqueous {[}C(2)C(4)im]{[}Br] system. Densities of pure bromide based ionic liquids decrease with increasing alkyl chain length on imidazolium cation and depend on total number of methyl group in both side alkyl chains. Apparent molar volumes at infinite dilution of investigated ionic liquids in water increase linearly with increase of the total number of the C atoms in the side alkyl chain. (C) 2018 Elsevier Ltd.",
journal = "The Journal of Chemical Thermodynamics",
title = "Influence of the alkyl chain length on densities and volumetric properties of 1,3-dialkylimidazolium bromide ionic liquids and their aqueous solutions",
volume = "121",
pages = "72-78",
doi = "10.1016/j.jct.2018.02.001"
}

Zec, N., Vraneš, M., Bešter-Rogač, M., Trtić-Petrović, T. M., Dimitrijević, A., Čobanov, I.,& Gadžurić, S.. (2018). Influence of the alkyl chain length on densities and volumetric properties of 1,3-dialkylimidazolium bromide ionic liquids and their aqueous solutions. in The Journal of Chemical Thermodynamics, 121, 72-78.
https://doi.org/10.1016/j.jct.2018.02.001

Zec N, Vraneš M, Bešter-Rogač M, Trtić-Petrović TM, Dimitrijević A, Čobanov I, Gadžurić S. Influence of the alkyl chain length on densities and volumetric properties of 1,3-dialkylimidazolium bromide ionic liquids and their aqueous solutions. in The Journal of Chemical Thermodynamics. 2018;121:72-78.
doi:10.1016/j.jct.2018.02.001 .

Zec, Nebojša, Vraneš, Milan, Bešter-Rogač, Marija, Trtić-Petrović, Tatjana M., Dimitrijević, Aleksandra, Čobanov, Isidora, Gadžurić, Slobodan, "Influence of the alkyl chain length on densities and volumetric properties of 1,3-dialkylimidazolium bromide ionic liquids and their aqueous solutions" in The Journal of Chemical Thermodynamics, 121 (2018):72-78,
https://doi.org/10.1016/j.jct.2018.02.001 . .

TY  - JOUR
AU  - Zdolšek, Nikola
AU  - Dimitrijević, Aleksandra
AU  - Bendova, Magdalena
AU  - Krstić, Jugoslav B.
AU  - Rocha, Raquel P.
AU  - Figueiredo, Jose L.
AU  - Bajuk-Bogdanović, Danica V.
AU  - Trtić-Petrović, Tatjana M.
AU  - Šljukić, Biljana
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7672
AB  - Carbon materials, prepared by using different methods with ionicliquids, are compared as electrocatalysts for the oxygen reductionreaction (ORR). Materials were synthesized through the hydrothermalcarbonization of glucose and by using the same method in the presence of1-butyl-3-methylimidazolium methanesulfonate {[}bmim]{[}MeSO3] as anadditive. Another two carbon-based materials were prepared by usingionic-liquid-based methods: ionothermal carbonization of glucose using{[}bmim]{[}MeSO3] as a recyclable medium for the carbonization reactionand by direct carbonization of the ionic liquid in a one-step methodusing {[}bmim]{[}MeSO3] as the precursor for N- and S-doped porouscarbon (Carb-IL). Characterization results showed the possibility ofmorphology and porosity control by using {[}bmim]{[}MeSO3]. Allmaterials were subsequently tested for the ORR in alkaline media.Carb-IL showed enhanced and stable electrocatalytic ORR activity, evenin the presence of methanol, ethanol, and borohydride, opening thepossibility for its application in fuel cells.
T2  - ChemElectroChem
T1  - Electrocatalytic Activity of Ionic-Liquid-Derived Porous Carbon Materials for the Oxygen Reduction Reaction
VL  - 5
IS  - 7
SP  - 1037
EP  - 1046
DO  - 10.1002/celc.201701369
ER  - 

@article{
author = "Zdolšek, Nikola and Dimitrijević, Aleksandra and Bendova, Magdalena and Krstić, Jugoslav B. and Rocha, Raquel P. and Figueiredo, Jose L. and Bajuk-Bogdanović, Danica V. and Trtić-Petrović, Tatjana M. and Šljukić, Biljana",
year = "2018",
abstract = "Carbon materials, prepared by using different methods with ionicliquids, are compared as electrocatalysts for the oxygen reductionreaction (ORR). Materials were synthesized through the hydrothermalcarbonization of glucose and by using the same method in the presence of1-butyl-3-methylimidazolium methanesulfonate {[}bmim]{[}MeSO3] as anadditive. Another two carbon-based materials were prepared by usingionic-liquid-based methods: ionothermal carbonization of glucose using{[}bmim]{[}MeSO3] as a recyclable medium for the carbonization reactionand by direct carbonization of the ionic liquid in a one-step methodusing {[}bmim]{[}MeSO3] as the precursor for N- and S-doped porouscarbon (Carb-IL). Characterization results showed the possibility ofmorphology and porosity control by using {[}bmim]{[}MeSO3]. Allmaterials were subsequently tested for the ORR in alkaline media.Carb-IL showed enhanced and stable electrocatalytic ORR activity, evenin the presence of methanol, ethanol, and borohydride, opening thepossibility for its application in fuel cells.",
journal = "ChemElectroChem",
title = "Electrocatalytic Activity of Ionic-Liquid-Derived Porous Carbon Materials for the Oxygen Reduction Reaction",
volume = "5",
number = "7",
pages = "1037-1046",
doi = "10.1002/celc.201701369"
}

Zdolšek, N., Dimitrijević, A., Bendova, M., Krstić, J. B., Rocha, R. P., Figueiredo, J. L., Bajuk-Bogdanović, D. V., Trtić-Petrović, T. M.,& Šljukić, B.. (2018). Electrocatalytic Activity of Ionic-Liquid-Derived Porous Carbon Materials for the Oxygen Reduction Reaction. in ChemElectroChem, 5(7), 1037-1046.
https://doi.org/10.1002/celc.201701369

Zdolšek N, Dimitrijević A, Bendova M, Krstić JB, Rocha RP, Figueiredo JL, Bajuk-Bogdanović DV, Trtić-Petrović TM, Šljukić B. Electrocatalytic Activity of Ionic-Liquid-Derived Porous Carbon Materials for the Oxygen Reduction Reaction. in ChemElectroChem. 2018;5(7):1037-1046.
doi:10.1002/celc.201701369 .

Zdolšek, Nikola, Dimitrijević, Aleksandra, Bendova, Magdalena, Krstić, Jugoslav B., Rocha, Raquel P., Figueiredo, Jose L., Bajuk-Bogdanović, Danica V., Trtić-Petrović, Tatjana M., Šljukić, Biljana, "Electrocatalytic Activity of Ionic-Liquid-Derived Porous Carbon Materials for the Oxygen Reduction Reaction" in ChemElectroChem, 5, no. 7 (2018):1037-1046,
https://doi.org/10.1002/celc.201701369 . .

TY  - JOUR
AU  - Trtić-Petrović, Tatjana M.
AU  - Dimitrijević, Aleksandra
AU  - Zdolšek, Nikola
AU  - Đorđević, Jelena S.
AU  - Tot, Aleksandar
AU  - Vraneš, Milan
AU  - Gadžurić, Slobodan
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1891
AB  - In this study, four hydrophilic ionic liquids (ILs) containing 1-alkyl-3-methylimidazolim cation and either salicylate or chloride anions were synthetized and studied as new task-specific ionic liquids (TSILs) suitable for aqueous biphasic system (ABS) formation and selective one-step extraction of copper(II). TSILs are designed so that the anion is responsible for forming the complex with metal(II) and preventing hydrolysis of metal cations at very strong alkaline pH, whereas the cation is responsible for selective extraction of metal(II)-salicylate complexes. It was found that 1-butyl-3-methylimidazolium salicylate could be used for selective extraction of Cu(II) in the presence of Zn(II), Cd(II), and Pb(II) at very alkaline solution without metal hydroxide formation. It was assumed that formation of metal(II)-salicylate complexes prevents the hydrolysis of the metal ions in alkaline solutions. The determined stability constants for Cu(II)-salicylate complexes, where salicylate was derived from different ionic liquids, indicated that there was no significant influence of the cation of the ionic liquid on the stability of the complexes. The ABS based on 1-butyl-3-methylimidazolium salicylate has been applied as the sample preparation step prior to voltammetric determination of Cu(II). The effect of volume of aqueous sample and IL and extraction time were investigated and optimum extraction conditions were determined. The obtained detection limits were 8 ng dm(-3). The optimized method was applied for the determination of Cu(II) in tap water, wastewater, and urine. The study indicated that application of the ABS based on 1-butyl-3-methylimidazolium salicylate ionic liquid could be successfully applied as the sample preparation method for the determination of Cu(II) from various environmental samples.
T2  - Analytical and Bioanalytical Chemistry
T1  - New sample preparation method based on task-specific ionic liquids for extraction and determination of copper in urine and wastewater
VL  - 410
IS  - 1
SP  - 155
EP  - 166
DO  - 10.1007/s00216-017-0705-z
ER  - 

@article{
author = "Trtić-Petrović, Tatjana M. and Dimitrijević, Aleksandra and Zdolšek, Nikola and Đorđević, Jelena S. and Tot, Aleksandar and Vraneš, Milan and Gadžurić, Slobodan",
year = "2018",
abstract = "In this study, four hydrophilic ionic liquids (ILs) containing 1-alkyl-3-methylimidazolim cation and either salicylate or chloride anions were synthetized and studied as new task-specific ionic liquids (TSILs) suitable for aqueous biphasic system (ABS) formation and selective one-step extraction of copper(II). TSILs are designed so that the anion is responsible for forming the complex with metal(II) and preventing hydrolysis of metal cations at very strong alkaline pH, whereas the cation is responsible for selective extraction of metal(II)-salicylate complexes. It was found that 1-butyl-3-methylimidazolium salicylate could be used for selective extraction of Cu(II) in the presence of Zn(II), Cd(II), and Pb(II) at very alkaline solution without metal hydroxide formation. It was assumed that formation of metal(II)-salicylate complexes prevents the hydrolysis of the metal ions in alkaline solutions. The determined stability constants for Cu(II)-salicylate complexes, where salicylate was derived from different ionic liquids, indicated that there was no significant influence of the cation of the ionic liquid on the stability of the complexes. The ABS based on 1-butyl-3-methylimidazolium salicylate has been applied as the sample preparation step prior to voltammetric determination of Cu(II). The effect of volume of aqueous sample and IL and extraction time were investigated and optimum extraction conditions were determined. The obtained detection limits were 8 ng dm(-3). The optimized method was applied for the determination of Cu(II) in tap water, wastewater, and urine. The study indicated that application of the ABS based on 1-butyl-3-methylimidazolium salicylate ionic liquid could be successfully applied as the sample preparation method for the determination of Cu(II) from various environmental samples.",
journal = "Analytical and Bioanalytical Chemistry",
title = "New sample preparation method based on task-specific ionic liquids for extraction and determination of copper in urine and wastewater",
volume = "410",
number = "1",
pages = "155-166",
doi = "10.1007/s00216-017-0705-z"
}

Trtić-Petrović, T. M., Dimitrijević, A., Zdolšek, N., Đorđević, J. S., Tot, A., Vraneš, M.,& Gadžurić, S.. (2018). New sample preparation method based on task-specific ionic liquids for extraction and determination of copper in urine and wastewater. in Analytical and Bioanalytical Chemistry, 410(1), 155-166.
https://doi.org/10.1007/s00216-017-0705-z

Trtić-Petrović TM, Dimitrijević A, Zdolšek N, Đorđević JS, Tot A, Vraneš M, Gadžurić S. New sample preparation method based on task-specific ionic liquids for extraction and determination of copper in urine and wastewater. in Analytical and Bioanalytical Chemistry. 2018;410(1):155-166.
doi:10.1007/s00216-017-0705-z .

Trtić-Petrović, Tatjana M., Dimitrijević, Aleksandra, Zdolšek, Nikola, Đorđević, Jelena S., Tot, Aleksandar, Vraneš, Milan, Gadžurić, Slobodan, "New sample preparation method based on task-specific ionic liquids for extraction and determination of copper in urine and wastewater" in Analytical and Bioanalytical Chemistry, 410, no. 1 (2018):155-166,
https://doi.org/10.1007/s00216-017-0705-z . .

TY  - JOUR
AU  - Dimitrijević, Aleksandra
AU  - Ignjatović, Ljubiša M.
AU  - Tot, Aleksandar
AU  - Vraneš, Milan
AU  - Zec, Nebojša
AU  - Gadžurić, Slobodan
AU  - Trtić-Petrović, Tatjana M.
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1776
AB  - In this paper we report a simultaneous one-step extraction of five pesticides (acetamiprid, imidaclopride, simazine, linuron and tebufenozide) of different polarity using aqueous biphasic system based on 1-butyl-3(methyl or ethyl) substituted imidazolium or pyrrolidinium ionic liquids with bromide or dicyanamide anion and potassium carbonate as a salting-out agent. Experimentally data obtained for the ternary system (ionic liquid + K2CO3 + H2O) were fitted and correlated by Merchuk equation with satisfactory high correlation factor. The effect of the cation alkyl chain length and the variation of anions of the ionic liquid on the aqueous biphasic system formation and the efficiency of pesticide extraction were investigated. Complete extraction of all studied pesticides was obtained applying aqueous biphasic system based on 1-butyl-3-ethyl imidazolium dicyanamide. It was shown that simultaneous extraction of the different polarity pesticides is achieved in a single-step procedure applying properly tailored ionic liquids in the aqueous biphasic system formulation. In order to explain excellent extraction of the polar pesticides in the studied aqueous biphasic systems, molecular dynamics was applied and the binding energies and non-covalent interactions were calculated. It was found that 1-butyl-3-ethyl imidazolium dicyanamide achieves the strongest interactions with the polar pesticides (acetamiprid and imidaclopride) leading to the highest partition coefficients. It was shown that combination of experimental and computational approach can be successfully applied for the selection and design of suitable ionic liquids for efficient extraction of various polarity pesticides using simple aqueous biphasic ionic liquid based systems. (C) 2017 Elsevier B.V. All rights reserved.
T2  - Journal of Molecular Liquids
T1  - Simultaneous extraction of pesticides of different polarity applying aqueous biphasic systems based on ionic liquids
VL  - 243
SP  - 646
EP  - 653
DO  - 10.1016/j.molliq.2017.08.077
ER  - 

@article{
author = "Dimitrijević, Aleksandra and Ignjatović, Ljubiša M. and Tot, Aleksandar and Vraneš, Milan and Zec, Nebojša and Gadžurić, Slobodan and Trtić-Petrović, Tatjana M.",
year = "2017",
abstract = "In this paper we report a simultaneous one-step extraction of five pesticides (acetamiprid, imidaclopride, simazine, linuron and tebufenozide) of different polarity using aqueous biphasic system based on 1-butyl-3(methyl or ethyl) substituted imidazolium or pyrrolidinium ionic liquids with bromide or dicyanamide anion and potassium carbonate as a salting-out agent. Experimentally data obtained for the ternary system (ionic liquid + K2CO3 + H2O) were fitted and correlated by Merchuk equation with satisfactory high correlation factor. The effect of the cation alkyl chain length and the variation of anions of the ionic liquid on the aqueous biphasic system formation and the efficiency of pesticide extraction were investigated. Complete extraction of all studied pesticides was obtained applying aqueous biphasic system based on 1-butyl-3-ethyl imidazolium dicyanamide. It was shown that simultaneous extraction of the different polarity pesticides is achieved in a single-step procedure applying properly tailored ionic liquids in the aqueous biphasic system formulation. In order to explain excellent extraction of the polar pesticides in the studied aqueous biphasic systems, molecular dynamics was applied and the binding energies and non-covalent interactions were calculated. It was found that 1-butyl-3-ethyl imidazolium dicyanamide achieves the strongest interactions with the polar pesticides (acetamiprid and imidaclopride) leading to the highest partition coefficients. It was shown that combination of experimental and computational approach can be successfully applied for the selection and design of suitable ionic liquids for efficient extraction of various polarity pesticides using simple aqueous biphasic ionic liquid based systems. (C) 2017 Elsevier B.V. All rights reserved.",
journal = "Journal of Molecular Liquids",
title = "Simultaneous extraction of pesticides of different polarity applying aqueous biphasic systems based on ionic liquids",
volume = "243",
pages = "646-653",
doi = "10.1016/j.molliq.2017.08.077"
}

Dimitrijević, A., Ignjatović, L. M., Tot, A., Vraneš, M., Zec, N., Gadžurić, S.,& Trtić-Petrović, T. M.. (2017). Simultaneous extraction of pesticides of different polarity applying aqueous biphasic systems based on ionic liquids. in Journal of Molecular Liquids, 243, 646-653.
https://doi.org/10.1016/j.molliq.2017.08.077

Dimitrijević A, Ignjatović LM, Tot A, Vraneš M, Zec N, Gadžurić S, Trtić-Petrović TM. Simultaneous extraction of pesticides of different polarity applying aqueous biphasic systems based on ionic liquids. in Journal of Molecular Liquids. 2017;243:646-653.
doi:10.1016/j.molliq.2017.08.077 .

Dimitrijević, Aleksandra, Ignjatović, Ljubiša M., Tot, Aleksandar, Vraneš, Milan, Zec, Nebojša, Gadžurić, Slobodan, Trtić-Petrović, Tatjana M., "Simultaneous extraction of pesticides of different polarity applying aqueous biphasic systems based on ionic liquids" in Journal of Molecular Liquids, 243 (2017):646-653,
https://doi.org/10.1016/j.molliq.2017.08.077 . .

TY  - JOUR
AU  - Dimitrijević, Aleksandra
AU  - Trtić-Petrović, Tatjana M.
AU  - Vraneš, Milan
AU  - Papović, Snežana
AU  - Tot, Aleksandar
AU  - Dožić, Sanja
AU  - Gadžurić, Slobodan
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/899
AB  - In this work, novel phase diagrams for aqueous solutions of 1-alkyl-3-methylimidazolium- and 1-butyl-3-ethylimidazolium-based ILs combined with phosphate-based salts, namely, K3PO4 or K2HPO4, are reported and discussed. To correlate the binodal data, the Merchuk equation is applied. The tie lines and tie-line lengths are also presented. The anion influence on the ability to form aqueous biphasic system (ABS) is investigated for the IL with the same1-butyl-3-methylimidazolium cation, [bmim](+), and various anions, for example, salicylate, [SAL](-); trifluoromethanesulfonate, [TFS](-); dicyanamide, [DCA](-); and chloride, [Cl](-). The order of studied anions to form ABS is [TFS](-) GT [SAL](-) GT [DCA](-) GT [Cl](-). The effect of alkyl chain length on imidazolium ion on liquidliquid equilibrium is discussed in terms of increasing ionic liquid hydrophobicity and poorer affinity for water. It is shown that 1-hexyl-3-methylimidazolium chloride ionic liquid has a better ability to form ABS comparing to ionic liquid with butyl chain and the same anion. Newly synthesized ionic-liquid-containing ethyl group 1-butyl-3-ethylimidazolium bromide was also investigated, showing the influence of both ethyl group and bromide anion on the ability of ABS formation.
T2  - Journal of Chemical and Engineering Data
T1  - Liquid-Liquid Equilibria in Aqueous 1-Alkyl-3-methylimidazolium- and 1-Butyl-3-ethylimidazolium-Based Ionic Liquids
VL  - 61
IS  - 1
SP  - 549
EP  - 555
DO  - 10.1021/acs.jced.5b00697
ER  - 

@article{
author = "Dimitrijević, Aleksandra and Trtić-Petrović, Tatjana M. and Vraneš, Milan and Papović, Snežana and Tot, Aleksandar and Dožić, Sanja and Gadžurić, Slobodan",
year = "2016",
abstract = "In this work, novel phase diagrams for aqueous solutions of 1-alkyl-3-methylimidazolium- and 1-butyl-3-ethylimidazolium-based ILs combined with phosphate-based salts, namely, K3PO4 or K2HPO4, are reported and discussed. To correlate the binodal data, the Merchuk equation is applied. The tie lines and tie-line lengths are also presented. The anion influence on the ability to form aqueous biphasic system (ABS) is investigated for the IL with the same1-butyl-3-methylimidazolium cation, [bmim](+), and various anions, for example, salicylate, [SAL](-); trifluoromethanesulfonate, [TFS](-); dicyanamide, [DCA](-); and chloride, [Cl](-). The order of studied anions to form ABS is [TFS](-) GT [SAL](-) GT [DCA](-) GT [Cl](-). The effect of alkyl chain length on imidazolium ion on liquidliquid equilibrium is discussed in terms of increasing ionic liquid hydrophobicity and poorer affinity for water. It is shown that 1-hexyl-3-methylimidazolium chloride ionic liquid has a better ability to form ABS comparing to ionic liquid with butyl chain and the same anion. Newly synthesized ionic-liquid-containing ethyl group 1-butyl-3-ethylimidazolium bromide was also investigated, showing the influence of both ethyl group and bromide anion on the ability of ABS formation.",
journal = "Journal of Chemical and Engineering Data",
title = "Liquid-Liquid Equilibria in Aqueous 1-Alkyl-3-methylimidazolium- and 1-Butyl-3-ethylimidazolium-Based Ionic Liquids",
volume = "61",
number = "1",
pages = "549-555",
doi = "10.1021/acs.jced.5b00697"
}

Dimitrijević, A., Trtić-Petrović, T. M., Vraneš, M., Papović, S., Tot, A., Dožić, S.,& Gadžurić, S.. (2016). Liquid-Liquid Equilibria in Aqueous 1-Alkyl-3-methylimidazolium- and 1-Butyl-3-ethylimidazolium-Based Ionic Liquids. in Journal of Chemical and Engineering Data, 61(1), 549-555.
https://doi.org/10.1021/acs.jced.5b00697

Dimitrijević A, Trtić-Petrović TM, Vraneš M, Papović S, Tot A, Dožić S, Gadžurić S. Liquid-Liquid Equilibria in Aqueous 1-Alkyl-3-methylimidazolium- and 1-Butyl-3-ethylimidazolium-Based Ionic Liquids. in Journal of Chemical and Engineering Data. 2016;61(1):549-555.
doi:10.1021/acs.jced.5b00697 .

Dimitrijević, Aleksandra, Trtić-Petrović, Tatjana M., Vraneš, Milan, Papović, Snežana, Tot, Aleksandar, Dožić, Sanja, Gadžurić, Slobodan, "Liquid-Liquid Equilibria in Aqueous 1-Alkyl-3-methylimidazolium- and 1-Butyl-3-ethylimidazolium-Based Ionic Liquids" in Journal of Chemical and Engineering Data, 61, no. 1 (2016):549-555,
https://doi.org/10.1021/acs.jced.5b00697 . .

TY  - JOUR
AU  - Dimitrijević, Aleksandra
AU  - Zec, Nebojša
AU  - Zdolšek, Nikola
AU  - Dožić, Sanja
AU  - Tot, Aleksandar
AU  - Gadžurić, Slobodan
AU  - Vraneš, Milan
AU  - Trtić-Petrović, Tatjana M.
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1213
AB  - In this work three 1-alkyl-3-ethylimidazolium bromide ionic liquids (alkyl = ethyl, hexyl and octyl) were synthesized applying both, conventional and microwave assisted synthetic paths. The phase diagrams for aqueous solutions of 1-alkyl-3-ethylimidazolium bromide ionic liquids as novel extractants combined with phosphate-based salts are reported and discussed in terms of aqueous biphasic system (ABS) formation. Merchuk equation was applied in order to correlate the,experimental binodal data. The liquid-liquid equilibrium data (tie-line compositions and tie-line length) were also experimentally determined by a gravimetric method. The influence of the alkyl chain length on ABS formation ability was investigated. It was found that ability to form ABS increases with the increase of the alkyl chain length on the imidazolium cation. Also, it was found that ionic liquids with ethyl group in the N-3 position better form ABS compared to those with methyl substituent. This was discussed in terms of increasing ionic liquid hydrophobicity and poor affinity for water. In order to better understand the impact of the alkyl side chain of the imidazolium ion and the efficiency of ABS formation, computer simulations were performed using investigated ionic liquids with the ethyl group in the position N-3 of the cation and different alkyl substituents in the position N-1. Also, extraction of selected organic dyes was performed to demonstrate application of studied ionic liquids as novel extractants. (C) 2016 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
T2  - Journal of Industrial and Engineering Chemistry
T1  - Aqueous biphasic system formation using 1-alkyl-3-ethylimidazolium bromide ionic liquids as new extractants
VL  - 40
SP  - 152
EP  - 160
DO  - 10.1016/j.jiec.2016.06.017
ER  - 

@article{
author = "Dimitrijević, Aleksandra and Zec, Nebojša and Zdolšek, Nikola and Dožić, Sanja and Tot, Aleksandar and Gadžurić, Slobodan and Vraneš, Milan and Trtić-Petrović, Tatjana M.",
year = "2016",
abstract = "In this work three 1-alkyl-3-ethylimidazolium bromide ionic liquids (alkyl = ethyl, hexyl and octyl) were synthesized applying both, conventional and microwave assisted synthetic paths. The phase diagrams for aqueous solutions of 1-alkyl-3-ethylimidazolium bromide ionic liquids as novel extractants combined with phosphate-based salts are reported and discussed in terms of aqueous biphasic system (ABS) formation. Merchuk equation was applied in order to correlate the,experimental binodal data. The liquid-liquid equilibrium data (tie-line compositions and tie-line length) were also experimentally determined by a gravimetric method. The influence of the alkyl chain length on ABS formation ability was investigated. It was found that ability to form ABS increases with the increase of the alkyl chain length on the imidazolium cation. Also, it was found that ionic liquids with ethyl group in the N-3 position better form ABS compared to those with methyl substituent. This was discussed in terms of increasing ionic liquid hydrophobicity and poor affinity for water. In order to better understand the impact of the alkyl side chain of the imidazolium ion and the efficiency of ABS formation, computer simulations were performed using investigated ionic liquids with the ethyl group in the position N-3 of the cation and different alkyl substituents in the position N-1. Also, extraction of selected organic dyes was performed to demonstrate application of studied ionic liquids as novel extractants. (C) 2016 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.",
journal = "Journal of Industrial and Engineering Chemistry",
title = "Aqueous biphasic system formation using 1-alkyl-3-ethylimidazolium bromide ionic liquids as new extractants",
volume = "40",
pages = "152-160",
doi = "10.1016/j.jiec.2016.06.017"
}

Dimitrijević, A., Zec, N., Zdolšek, N., Dožić, S., Tot, A., Gadžurić, S., Vraneš, M.,& Trtić-Petrović, T. M.. (2016). Aqueous biphasic system formation using 1-alkyl-3-ethylimidazolium bromide ionic liquids as new extractants. in Journal of Industrial and Engineering Chemistry, 40, 152-160.
https://doi.org/10.1016/j.jiec.2016.06.017

Dimitrijević A, Zec N, Zdolšek N, Dožić S, Tot A, Gadžurić S, Vraneš M, Trtić-Petrović TM. Aqueous biphasic system formation using 1-alkyl-3-ethylimidazolium bromide ionic liquids as new extractants. in Journal of Industrial and Engineering Chemistry. 2016;40:152-160.
doi:10.1016/j.jiec.2016.06.017 .

Dimitrijević, Aleksandra, Zec, Nebojša, Zdolšek, Nikola, Dožić, Sanja, Tot, Aleksandar, Gadžurić, Slobodan, Vraneš, Milan, Trtić-Petrović, Tatjana M., "Aqueous biphasic system formation using 1-alkyl-3-ethylimidazolium bromide ionic liquids as new extractants" in Journal of Industrial and Engineering Chemistry, 40 (2016):152-160,
https://doi.org/10.1016/j.jiec.2016.06.017 . .

TY  - JOUR
AU  - Trtić-Petrović, Tatjana M.
AU  - Dimitrijević, Aleksandra
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5726
AB  - The ionic liquid based vortex-assisted liquid-liquid microextraction (IL-VALLME) procedure was developed and validated for determination of four pesticides in a manufacturing wastewater sample: acetamiprid, imidacloprid, linuron and tebufenozide. The following ILs were tested as extractants: 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, 1-hexyl-3-methylimidazolium hexafluorophosphate, and 1-methyl-3-octylimidazolium hexafluorophosphate. The extraction efficiency and the enrichment factor dependencies on the type and amount of ionic liquids, extraction and centrifugation time, volume, pH and the ionic strength of the sample, were investigated. The concentration of pesticides in the aqueous and IL phases was determined by HPLC-DAD. The optimal conditions for extraction of the pesticides were determined: the aqueous sample volume of 10 mL with the addition of 0.58 g NaCl, 40 A mu L of the 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide as extractant, 2 min extraction under vigorous mixing applying the vortex agitator, and separation of the phases by centrifugation for 2 min at 1000 rpm. The calibration curves of the pesticides showed good linear relationship (r(2) a parts per thousand yen 0.9996) in the concentration range from 0.005 to 1.00 mg L-1. Determined LOD values are 1.8, 2.3, 4.8 and 8.6 A mu g L-1 for Tebf, Linr, Acet and Imid, respectively. The optimized IL-VALLME was applied for determination of the pesticides in the pesticide manufacturing wastewater.
T2  - Central European Journal of Chemistry
T1  - Vortex-assisted ionic liquid based liquid-liquid microextraction of selected pesticides from a manufacturing wastewater sample
VL  - 12
IS  - 1
SP  - 98
EP  - 106
DO  - 10.2478/s11532-013-0352-y
ER  - 

@article{
author = "Trtić-Petrović, Tatjana M. and Dimitrijević, Aleksandra",
year = "2014",
abstract = "The ionic liquid based vortex-assisted liquid-liquid microextraction (IL-VALLME) procedure was developed and validated for determination of four pesticides in a manufacturing wastewater sample: acetamiprid, imidacloprid, linuron and tebufenozide. The following ILs were tested as extractants: 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, 1-hexyl-3-methylimidazolium hexafluorophosphate, and 1-methyl-3-octylimidazolium hexafluorophosphate. The extraction efficiency and the enrichment factor dependencies on the type and amount of ionic liquids, extraction and centrifugation time, volume, pH and the ionic strength of the sample, were investigated. The concentration of pesticides in the aqueous and IL phases was determined by HPLC-DAD. The optimal conditions for extraction of the pesticides were determined: the aqueous sample volume of 10 mL with the addition of 0.58 g NaCl, 40 A mu L of the 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide as extractant, 2 min extraction under vigorous mixing applying the vortex agitator, and separation of the phases by centrifugation for 2 min at 1000 rpm. The calibration curves of the pesticides showed good linear relationship (r(2) a parts per thousand yen 0.9996) in the concentration range from 0.005 to 1.00 mg L-1. Determined LOD values are 1.8, 2.3, 4.8 and 8.6 A mu g L-1 for Tebf, Linr, Acet and Imid, respectively. The optimized IL-VALLME was applied for determination of the pesticides in the pesticide manufacturing wastewater.",
journal = "Central European Journal of Chemistry",
title = "Vortex-assisted ionic liquid based liquid-liquid microextraction of selected pesticides from a manufacturing wastewater sample",
volume = "12",
number = "1",
pages = "98-106",
doi = "10.2478/s11532-013-0352-y"
}

Trtić-Petrović, T. M.,& Dimitrijević, A.. (2014). Vortex-assisted ionic liquid based liquid-liquid microextraction of selected pesticides from a manufacturing wastewater sample. in Central European Journal of Chemistry, 12(1), 98-106.
https://doi.org/10.2478/s11532-013-0352-y

Trtić-Petrović TM, Dimitrijević A. Vortex-assisted ionic liquid based liquid-liquid microextraction of selected pesticides from a manufacturing wastewater sample. in Central European Journal of Chemistry. 2014;12(1):98-106.
doi:10.2478/s11532-013-0352-y .

Trtić-Petrović, Tatjana M., Dimitrijević, Aleksandra, "Vortex-assisted ionic liquid based liquid-liquid microextraction of selected pesticides from a manufacturing wastewater sample" in Central European Journal of Chemistry, 12, no. 1 (2014):98-106,
https://doi.org/10.2478/s11532-013-0352-y . .

TY  - CONF
AU  - Dimitrijević, A.
AU  - Trtić-Petrović, Tatjana M.
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9177
AB  - Liquid-liquid equilibrium data have been reported for aqueous two-phase
systems formed by imidazolium-based ionic liquids, 1-hexyl-3-methylimidazolium chloride, and 1-butyl-3-methylimidazolium dicyanamide, with
inorganic salts,K2HPO4 and K3PO4. The binodal curves were fitted to a
three parameter equation and the tie line length was calculated.
PB  - Society of Physical Chemists of Serbia
C3  - Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry
T1  - Phase diagram ofthe selected aqueous twophase systems based on ionic liquids
VL  - A-14-P
UR  - https://hdl.handle.net/21.15107/rcub_vinar_9177
ER  - 

@conference{
author = "Dimitrijević, A. and Trtić-Petrović, Tatjana M.",
year = "2014",
abstract = "Liquid-liquid equilibrium data have been reported for aqueous two-phase
systems formed by imidazolium-based ionic liquids, 1-hexyl-3-methylimidazolium chloride, and 1-butyl-3-methylimidazolium dicyanamide, with
inorganic salts,K2HPO4 and K3PO4. The binodal curves were fitted to a
three parameter equation and the tie line length was calculated.",
publisher = "Society of Physical Chemists of Serbia",
journal = "Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry",
title = "Phase diagram ofthe selected aqueous twophase systems based on ionic liquids",
volume = "A-14-P",
url = "https://hdl.handle.net/21.15107/rcub_vinar_9177"
}

Dimitrijević, A.,& Trtić-Petrović, T. M.. (2014). Phase diagram ofthe selected aqueous twophase systems based on ionic liquids. in Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry
Society of Physical Chemists of Serbia., A-14-P.
https://hdl.handle.net/21.15107/rcub_vinar_9177

Dimitrijević A, Trtić-Petrović TM. Phase diagram ofthe selected aqueous twophase systems based on ionic liquids. in Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry. 2014;A-14-P.
https://hdl.handle.net/21.15107/rcub_vinar_9177 .

Dimitrijević, A., Trtić-Petrović, Tatjana M., "Phase diagram ofthe selected aqueous twophase systems based on ionic liquids" in Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry, A-14-P (2014),
https://hdl.handle.net/21.15107/rcub_vinar_9177 .