TY  - JOUR
AU  - Pejić, Nataša D.
AU  - Blagojević, Slavica M.
AU  - Sarap, Nataša
AU  - Maksimović, Jelena P.
AU  - Anić, SlobodanR.
AU  - Čupić, Željko
AU  - Kolar-Anić, Ljiljana Z.
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5870
AB  - Perturbation of the BrayLiebhafsky non-oscillating subsystem (mixture of KIO3 and H2SO4), i.e., Dushman reaction (DR), by piroxicam (PX), was observed in an open reactor, i.e., in the continuously fed well-stirred tank reactor (CSTR). Monitoring the response of DR to perturbations by different concentrations of PX allows developing a simple procedure for quantitative determination of this analyte in both bulk drug and pharmaceutical preparation (injection). A tentative perturbation mechanism of PX action on the DR matrix, based on a kinetic scheme that was suggested by Agreda etal., is proposed. The PX reactivity in DR has been generally related to the reaction of PX with hypoiodous acid (HIO) present in the matrix.
T2  - Helvetica Chimica Acta
T1  - Perturbations of the Dushman Reaction with Piroxicam: Experimental and Model Calculations
VL  - 97
IS  - 1
SP  - 47
EP  - 55
DO  - 10.1002/hlca.201300109
ER  - 

@article{
author = "Pejić, Nataša D. and Blagojević, Slavica M. and Sarap, Nataša and Maksimović, Jelena P. and Anić, SlobodanR. and Čupić, Željko and Kolar-Anić, Ljiljana Z.",
year = "2014",
abstract = "Perturbation of the BrayLiebhafsky non-oscillating subsystem (mixture of KIO3 and H2SO4), i.e., Dushman reaction (DR), by piroxicam (PX), was observed in an open reactor, i.e., in the continuously fed well-stirred tank reactor (CSTR). Monitoring the response of DR to perturbations by different concentrations of PX allows developing a simple procedure for quantitative determination of this analyte in both bulk drug and pharmaceutical preparation (injection). A tentative perturbation mechanism of PX action on the DR matrix, based on a kinetic scheme that was suggested by Agreda etal., is proposed. The PX reactivity in DR has been generally related to the reaction of PX with hypoiodous acid (HIO) present in the matrix.",
journal = "Helvetica Chimica Acta",
title = "Perturbations of the Dushman Reaction with Piroxicam: Experimental and Model Calculations",
volume = "97",
number = "1",
pages = "47-55",
doi = "10.1002/hlca.201300109"
}

Pejić, N. D., Blagojević, S. M., Sarap, N., Maksimović, J. P., Anić, SlobodanR., Čupić, Ž.,& Kolar-Anić, L. Z.. (2014). Perturbations of the Dushman Reaction with Piroxicam: Experimental and Model Calculations. in Helvetica Chimica Acta, 97(1), 47-55.
https://doi.org/10.1002/hlca.201300109

Pejić ND, Blagojević SM, Sarap N, Maksimović JP, Anić S, Čupić Ž, Kolar-Anić LZ. Perturbations of the Dushman Reaction with Piroxicam: Experimental and Model Calculations. in Helvetica Chimica Acta. 2014;97(1):47-55.
doi:10.1002/hlca.201300109 .

Pejić, Nataša D., Blagojević, Slavica M., Sarap, Nataša, Maksimović, Jelena P., Anić, SlobodanR., Čupić, Željko, Kolar-Anić, Ljiljana Z., "Perturbations of the Dushman Reaction with Piroxicam: Experimental and Model Calculations" in Helvetica Chimica Acta, 97, no. 1 (2014):47-55,
https://doi.org/10.1002/hlca.201300109 . .

TY  - CONF
AU  - Blagojević, Bratislav
AU  - Gajinov, Spasenka
AU  - Potkonjak, Nebojša I.
AU  - Blagojević, Slavica M.
AU  - Pejić, Nataša
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9256
AB  - The performances of mixtures of different surfactants: anionic (sodium
lauryl ether sulfate (SLES) and ά-olefin sulfonates (AOS), amphoteric (coco
betaine) and nonionic (coco amide, amine oxide, AO and various etoxylated
alcohols, C12-C15-7EO, C10-7EO and C9-C11-7EO), were studied. The
parameters measured were critical micelle concentration (CMC) and surface
tension of particular tenside mixture. The combination of SLES/AOS/C9-
C11-7EO/AO at ratio 75/15/7/3 achieved the lowest both the CMC and
surface tension compared to the other examined tenside mixtures
(SLES/AOS, SLES/AOS/coco betaine/AO, SLES/AOS/coco amide/AO,
SLES/AOS/C12-C15-7EO/AO and SLES/AOS/C10-7EO/AO). This study
showed that adding nonionic tenside (alcohol ethoxylate, C9-C11-7EO)
improved SLES/AOS foaming properties, synergism in detergency between
them. The reduction in the surface tension was obtained, thus indicated that
alcohol ethoxylate, C12-C15-7EO, C10-7EO and C9-C11-7EO can be used
to produce better cleaning products.
PB  - Society of Physical Chemists of Serbia
C3  - Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry
T1  - Determination of tenside mixtures efficiency: conductometric and stalagmometric investigation
VL  - L-08-P
UR  - https://hdl.handle.net/21.15107/rcub_vinar_9256
ER  - 

@conference{
author = "Blagojević, Bratislav and Gajinov, Spasenka and Potkonjak, Nebojša I. and Blagojević, Slavica M. and Pejić, Nataša",
year = "2014",
abstract = "The performances of mixtures of different surfactants: anionic (sodium
lauryl ether sulfate (SLES) and ά-olefin sulfonates (AOS), amphoteric (coco
betaine) and nonionic (coco amide, amine oxide, AO and various etoxylated
alcohols, C12-C15-7EO, C10-7EO and C9-C11-7EO), were studied. The
parameters measured were critical micelle concentration (CMC) and surface
tension of particular tenside mixture. The combination of SLES/AOS/C9-
C11-7EO/AO at ratio 75/15/7/3 achieved the lowest both the CMC and
surface tension compared to the other examined tenside mixtures
(SLES/AOS, SLES/AOS/coco betaine/AO, SLES/AOS/coco amide/AO,
SLES/AOS/C12-C15-7EO/AO and SLES/AOS/C10-7EO/AO). This study
showed that adding nonionic tenside (alcohol ethoxylate, C9-C11-7EO)
improved SLES/AOS foaming properties, synergism in detergency between
them. The reduction in the surface tension was obtained, thus indicated that
alcohol ethoxylate, C12-C15-7EO, C10-7EO and C9-C11-7EO can be used
to produce better cleaning products.",
publisher = "Society of Physical Chemists of Serbia",
journal = "Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry",
title = "Determination of tenside mixtures efficiency: conductometric and stalagmometric investigation",
volume = "L-08-P",
url = "https://hdl.handle.net/21.15107/rcub_vinar_9256"
}

Blagojević, B., Gajinov, S., Potkonjak, N. I., Blagojević, S. M.,& Pejić, N.. (2014). Determination of tenside mixtures efficiency: conductometric and stalagmometric investigation. in Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry
Society of Physical Chemists of Serbia., L-08-P.
https://hdl.handle.net/21.15107/rcub_vinar_9256

Blagojević B, Gajinov S, Potkonjak NI, Blagojević SM, Pejić N. Determination of tenside mixtures efficiency: conductometric and stalagmometric investigation. in Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry. 2014;L-08-P.
https://hdl.handle.net/21.15107/rcub_vinar_9256 .

Blagojević, Bratislav, Gajinov, Spasenka, Potkonjak, Nebojša I., Blagojević, Slavica M., Pejić, Nataša, "Determination of tenside mixtures efficiency: conductometric and stalagmometric investigation" in Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry, L-08-P (2014),
https://hdl.handle.net/21.15107/rcub_vinar_9256 .

TY  - CONF
AU  - Pejić, Nataša
AU  - Sarap, Nataša
AU  - Blagojević, Slavica M.
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9274
AB  - A novel method for the determination of piroxicam (PX) is proposed and validated.
For this purpose, the Bray-Liebhafsky (BL) non-oscillating subsystem (mixture
KIO3 and H2SO4), i.e. Dushman reaction (DR) was used. The proposed method
relies on the linear relationship between maximal potential shift, ΔEm, and the
logarithm of the injected PX amounts in the concentration range 2.0 × 10−5
 mol L−1
− 2.0 × 10−4
 mol L−1
. The sensitivity of the proposed method is 1.5 × 10−5
 mol L−1
.
Some aspects of the possible mechanism of UA action on the DR matrix system are
discussed.
PB  - Society of Physical Chemists of Serbia
C3  - Physical chemistry 2012 : 11th international conference on fundamental and applied aspects of physical chemistry
T1  - Perturbation of the Dushman reaction with piroxicam: experimental and model calculations
VL  - 1
SP  - 291
EP  - 293
UR  - https://hdl.handle.net/21.15107/rcub_vinar_9274
ER  - 

@conference{
author = "Pejić, Nataša and Sarap, Nataša and Blagojević, Slavica M.",
year = "2012",
abstract = "A novel method for the determination of piroxicam (PX) is proposed and validated.
For this purpose, the Bray-Liebhafsky (BL) non-oscillating subsystem (mixture
KIO3 and H2SO4), i.e. Dushman reaction (DR) was used. The proposed method
relies on the linear relationship between maximal potential shift, ΔEm, and the
logarithm of the injected PX amounts in the concentration range 2.0 × 10−5
 mol L−1
− 2.0 × 10−4
 mol L−1
. The sensitivity of the proposed method is 1.5 × 10−5
 mol L−1
.
Some aspects of the possible mechanism of UA action on the DR matrix system are
discussed.",
publisher = "Society of Physical Chemists of Serbia",
journal = "Physical chemistry 2012 : 11th international conference on fundamental and applied aspects of physical chemistry",
title = "Perturbation of the Dushman reaction with piroxicam: experimental and model calculations",
volume = "1",
pages = "291-293",
url = "https://hdl.handle.net/21.15107/rcub_vinar_9274"
}

Pejić, N., Sarap, N.,& Blagojević, S. M.. (2012). Perturbation of the Dushman reaction with piroxicam: experimental and model calculations. in Physical chemistry 2012 : 11th international conference on fundamental and applied aspects of physical chemistry
Society of Physical Chemists of Serbia., 1, 291-293.
https://hdl.handle.net/21.15107/rcub_vinar_9274

Pejić N, Sarap N, Blagojević SM. Perturbation of the Dushman reaction with piroxicam: experimental and model calculations. in Physical chemistry 2012 : 11th international conference on fundamental and applied aspects of physical chemistry. 2012;1:291-293.
https://hdl.handle.net/21.15107/rcub_vinar_9274 .

Pejić, Nataša, Sarap, Nataša, Blagojević, Slavica M., "Perturbation of the Dushman reaction with piroxicam: experimental and model calculations" in Physical chemistry 2012 : 11th international conference on fundamental and applied aspects of physical chemistry, 1 (2012):291-293,
https://hdl.handle.net/21.15107/rcub_vinar_9274 .