Electrochemical oxidation of diazinon in aqueous solutions via electrogenerated halogens - Diazinon fate and implications for its detection
Нема приказа
Аутори
Lazarević-Pašti, TamaraBondžić, Aleksandra M.
Pašti, Igor A.
Mentus, Slavko V.
Vasić, Vesna M.
Чланак у часопису
Метаподаци
Приказ свих података о документуАпстракт
Organophosphorous pesticide diazinon was indirectly oxidized to diazoxon by means of electrogenerated Cl-2, Br-2 or I-2 under galvanostatic conditions using rotating glassy carbon disk electrode. The rate of oxidation was the highest in the case of electrogenerated Br-2. In the presence of electrogenerated Br-2 diazinon was completely converted to diazoxon after 15 min of electrochemical treatment at all concentrations investigated. On the basis of thermodynamic and kinetic arguments it was showed that diazinon oxidation is governed by both kinetics and speciation of halogen species. Diazoxon is rapidly formed during its reaction with active oxidant species, while formed diazoxon is being stable and not degraded at appreciable rate by reactive halogen species. Described oxidation procedure was used as a pre-step for diazinon detection using AChE test coupled with optical detection. Diazinon detection limit was reduced by three orders of magnitude compared to unoxidized diazinon. This e...nabled diazinon detection at the lowest possible concentration using described methodology, as determined by diazoxon detection limit. (C) 2013 Elsevier B.V. All rights reserved.
Кључне речи:
Pesticide / Organophosphate / Electrochemical oxidation / acetylcholinesteraseИзвор:
Journal of Electroanalytical Chemistry, 2013, 692, 40-45Финансирање / пројекти:
- Истраживања интеракција ензима са токсичним и фармаколошки активним молекулима (RS-MESTD-Basic Research (BR or ON)-172023)
DOI: 10.1016/j.jelechem.2013.01.005
ISSN: 1572-6657
WoS: 000317322100006
Scopus: 2-s2.0-84873344458
Колекције
Институција/група
VinčaTY - JOUR AU - Lazarević-Pašti, Tamara AU - Bondžić, Aleksandra M. AU - Pašti, Igor A. AU - Mentus, Slavko V. AU - Vasić, Vesna M. PY - 2013 UR - https://vinar.vin.bg.ac.rs/handle/123456789/5410 AB - Organophosphorous pesticide diazinon was indirectly oxidized to diazoxon by means of electrogenerated Cl-2, Br-2 or I-2 under galvanostatic conditions using rotating glassy carbon disk electrode. The rate of oxidation was the highest in the case of electrogenerated Br-2. In the presence of electrogenerated Br-2 diazinon was completely converted to diazoxon after 15 min of electrochemical treatment at all concentrations investigated. On the basis of thermodynamic and kinetic arguments it was showed that diazinon oxidation is governed by both kinetics and speciation of halogen species. Diazoxon is rapidly formed during its reaction with active oxidant species, while formed diazoxon is being stable and not degraded at appreciable rate by reactive halogen species. Described oxidation procedure was used as a pre-step for diazinon detection using AChE test coupled with optical detection. Diazinon detection limit was reduced by three orders of magnitude compared to unoxidized diazinon. This enabled diazinon detection at the lowest possible concentration using described methodology, as determined by diazoxon detection limit. (C) 2013 Elsevier B.V. All rights reserved. T2 - Journal of Electroanalytical Chemistry T1 - Electrochemical oxidation of diazinon in aqueous solutions via electrogenerated halogens - Diazinon fate and implications for its detection VL - 692 SP - 40 EP - 45 DO - 10.1016/j.jelechem.2013.01.005 ER -
@article{ author = "Lazarević-Pašti, Tamara and Bondžić, Aleksandra M. and Pašti, Igor A. and Mentus, Slavko V. and Vasić, Vesna M.", year = "2013", abstract = "Organophosphorous pesticide diazinon was indirectly oxidized to diazoxon by means of electrogenerated Cl-2, Br-2 or I-2 under galvanostatic conditions using rotating glassy carbon disk electrode. The rate of oxidation was the highest in the case of electrogenerated Br-2. In the presence of electrogenerated Br-2 diazinon was completely converted to diazoxon after 15 min of electrochemical treatment at all concentrations investigated. On the basis of thermodynamic and kinetic arguments it was showed that diazinon oxidation is governed by both kinetics and speciation of halogen species. Diazoxon is rapidly formed during its reaction with active oxidant species, while formed diazoxon is being stable and not degraded at appreciable rate by reactive halogen species. Described oxidation procedure was used as a pre-step for diazinon detection using AChE test coupled with optical detection. Diazinon detection limit was reduced by three orders of magnitude compared to unoxidized diazinon. This enabled diazinon detection at the lowest possible concentration using described methodology, as determined by diazoxon detection limit. (C) 2013 Elsevier B.V. All rights reserved.", journal = "Journal of Electroanalytical Chemistry", title = "Electrochemical oxidation of diazinon in aqueous solutions via electrogenerated halogens - Diazinon fate and implications for its detection", volume = "692", pages = "40-45", doi = "10.1016/j.jelechem.2013.01.005" }
Lazarević-Pašti, T., Bondžić, A. M., Pašti, I. A., Mentus, S. V.,& Vasić, V. M.. (2013). Electrochemical oxidation of diazinon in aqueous solutions via electrogenerated halogens - Diazinon fate and implications for its detection. in Journal of Electroanalytical Chemistry, 692, 40-45. https://doi.org/10.1016/j.jelechem.2013.01.005
Lazarević-Pašti T, Bondžić AM, Pašti IA, Mentus SV, Vasić VM. Electrochemical oxidation of diazinon in aqueous solutions via electrogenerated halogens - Diazinon fate and implications for its detection. in Journal of Electroanalytical Chemistry. 2013;692:40-45. doi:10.1016/j.jelechem.2013.01.005 .
Lazarević-Pašti, Tamara, Bondžić, Aleksandra M., Pašti, Igor A., Mentus, Slavko V., Vasić, Vesna M., "Electrochemical oxidation of diazinon in aqueous solutions via electrogenerated halogens - Diazinon fate and implications for its detection" in Journal of Electroanalytical Chemistry, 692 (2013):40-45, https://doi.org/10.1016/j.jelechem.2013.01.005 . .