Adsorptive stripping voltammetric determination of carbofuran in herbs on chromatographic sorbent modified electrode

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F21%3A10435842" target="_blank" >RIV/00216208:11310/21:10435842 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=ROzHe-JssT" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=ROzHe-JssT</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jelechem.2021.115692" target="_blank" >10.1016/j.jelechem.2021.115692</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Adsorptive stripping voltammetric determination of carbofuran in herbs on chromatographic sorbent modified electrode

Popis výsledku v původním jazyce

The determination of carbofuran (CBF) in herbs (wild chamomile and Saint-John&apos;s-wort) was developed using a carbon-containing electrode (CCE) modified with carbon ink (CI) containing chromatographic sorbent (CS) based on chromaton (Ch), polyethylene glycol (PEG), and iron acetylacetonate (Fe(AA)(3)). The surface morphology of the Ch/PEG/Fe(AA)(3)/CI/CCE was investigated by scanning electron microscopy (SEM) in backscatteredelectron (BSE) mode and by electrochemical impedance spectroscopy (EIS). Electrochemically inactive CBF was converted to an electrochemically active phenolic analogue CBFP by an alkaline hydrolysis. The electrochemical behavior of CBFP at Ch/PEG/Fe(AA)(3)/CI/CCE was studied by cyclic voltammetry (CV) in a phosphate buffer solution (PBS) pH 6.86 in the potential range from -0.4 to 1.2 V. Under the optimal experimental conditions, linear concentration dependences in the concentration range from 0.25 to 10 mu mol center dot L-1 were obtained by linear scan voltammetry in the first derivative mode (LSVFD) with limit of detection (LOD) 0.08 mu mol center dot L-1. The proposed Ch/PEG/Fe(AA)(3)/CI/CCE demonstrated good sensitivity and selectivity for the determination of CBF after its conversion to CBFP. The use of sorbents as modifying agents of electrodes for the determination of carbamate pesticides opens up the possibilities for &quot;green&quot; electroanalytical chemistry.

Název v anglickém jazyce

Adsorptive stripping voltammetric determination of carbofuran in herbs on chromatographic sorbent modified electrode

Popis výsledku anglicky

The determination of carbofuran (CBF) in herbs (wild chamomile and Saint-John&apos;s-wort) was developed using a carbon-containing electrode (CCE) modified with carbon ink (CI) containing chromatographic sorbent (CS) based on chromaton (Ch), polyethylene glycol (PEG), and iron acetylacetonate (Fe(AA)(3)). The surface morphology of the Ch/PEG/Fe(AA)(3)/CI/CCE was investigated by scanning electron microscopy (SEM) in backscatteredelectron (BSE) mode and by electrochemical impedance spectroscopy (EIS). Electrochemically inactive CBF was converted to an electrochemically active phenolic analogue CBFP by an alkaline hydrolysis. The electrochemical behavior of CBFP at Ch/PEG/Fe(AA)(3)/CI/CCE was studied by cyclic voltammetry (CV) in a phosphate buffer solution (PBS) pH 6.86 in the potential range from -0.4 to 1.2 V. Under the optimal experimental conditions, linear concentration dependences in the concentration range from 0.25 to 10 mu mol center dot L-1 were obtained by linear scan voltammetry in the first derivative mode (LSVFD) with limit of detection (LOD) 0.08 mu mol center dot L-1. The proposed Ch/PEG/Fe(AA)(3)/CI/CCE demonstrated good sensitivity and selectivity for the determination of CBF after its conversion to CBFP. The use of sorbents as modifying agents of electrodes for the determination of carbamate pesticides opens up the possibilities for &quot;green&quot; electroanalytical chemistry.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10406 - Analytical chemistry

Projekt

<a href="/cs/project/GC20-01417J" target="_blank" >GC20-01417J: Nové přístupy zabraňující pasivaci elektrod při monitorování environmentálních organických polutantů</a><br>

Návaznosti

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

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Journal of Electroanalytical Chemistry

ISSN

1572-6657

e-ISSN

—

Svazek periodika

900

Číslo periodika v rámci svazku

November

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

6

Strana od-do

115692

Kód UT WoS článku

000709863700005

EID výsledku v databázi Scopus

2-s2.0-85116060565