Oxidation Behavior of Insecticide Azoxystrobin and its Voltammetric Determination Using Boron-doped Diamond Electrode

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F19%3A39914580" target="_blank" >RIV/00216275:25310/19:39914580 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989592:15310/19:73598179

Výsledek na webu

<a href="https://onlinelibrary.wiley.com/doi/full/10.1002/elan.201800647" target="_blank" >https://onlinelibrary.wiley.com/doi/full/10.1002/elan.201800647</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/elan.201800647" target="_blank" >10.1002/elan.201800647</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Oxidation Behavior of Insecticide Azoxystrobin and its Voltammetric Determination Using Boron-doped Diamond Electrode

Popis výsledku v původním jazyce

Electrochemical oxidation of azoxystrobin, a systemic fungicide commonly used in agriculture to protect a wide variety of crops, was investigated using cyclic voltammetry with a boron-doped diamond electrode (BDDE) in aqueous buffer solutions. Two pH independent irreversible anodic current peaks controlled mostly by diffusion were observed in wide pH range (2 to 12) at potentials +1600mV and +2150mV vs. saturated silver-silver chloride electrode. Mechanism of the electrochemical oxidation was proposed and supported with high performance liquid chromatography/mass spectrometry analysis of azoxystrobin solutions electrolyzed on carbon fiber brush electrode. The main product of the first two-electron oxidation step was identified as methyl 2-(2-{[6-(2-cyanophenoxy)pyrimidin-4-yl]oxy}phenyl)-2-hydroxy-3-oxopropanoate. An analytical method for the determination of azoxystrobin in water samples and pesticide preparation by differential pulse voltammetry with BDDE was developed. The method provides a wide linear dynamic range (3.0x10(-7) to 2.0x10(-4)molL(-1)) with limit of detection 8x10(-8)molL(-1). Accuracy of the method was evaluated by the addition and recovery method with recoveries ranging from 96.0 to 105.8%. Interference study proved sufficient selectivity of the developed voltammetric method for the azoxystrobin determination in presence of azole fungicides as well as pesticides used to prevent the same crops.

Název v anglickém jazyce

Oxidation Behavior of Insecticide Azoxystrobin and its Voltammetric Determination Using Boron-doped Diamond Electrode

Popis výsledku anglicky

Electrochemical oxidation of azoxystrobin, a systemic fungicide commonly used in agriculture to protect a wide variety of crops, was investigated using cyclic voltammetry with a boron-doped diamond electrode (BDDE) in aqueous buffer solutions. Two pH independent irreversible anodic current peaks controlled mostly by diffusion were observed in wide pH range (2 to 12) at potentials +1600mV and +2150mV vs. saturated silver-silver chloride electrode. Mechanism of the electrochemical oxidation was proposed and supported with high performance liquid chromatography/mass spectrometry analysis of azoxystrobin solutions electrolyzed on carbon fiber brush electrode. The main product of the first two-electron oxidation step was identified as methyl 2-(2-{[6-(2-cyanophenoxy)pyrimidin-4-yl]oxy}phenyl)-2-hydroxy-3-oxopropanoate. An analytical method for the determination of azoxystrobin in water samples and pesticide preparation by differential pulse voltammetry with BDDE was developed. The method provides a wide linear dynamic range (3.0x10(-7) to 2.0x10(-4)molL(-1)) with limit of detection 8x10(-8)molL(-1). Accuracy of the method was evaluated by the addition and recovery method with recoveries ranging from 96.0 to 105.8%. Interference study proved sufficient selectivity of the developed voltammetric method for the azoxystrobin determination in presence of azole fungicides as well as pesticides used to prevent the same crops.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

10406 - Analytical chemistry

Projekt

<a href="/cs/project/GA17-03868S" target="_blank" >GA17-03868S: Nové metody elektrochemického sledování biologicky aktivních organických látek v environmentálních, biologických a potravinových matricích</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Electroanalysis

ISSN

1040-0397

e-ISSN

—

Svazek periodika

31

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

11

Strana od-do

363-373

Kód UT WoS článku

000459630500026

EID výsledku v databázi Scopus

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