A miniaturized electrode system for voltammetric determination of electrochemically reducible environmental pollutants

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F16%3A00453603" target="_blank" >RIV/61388955:_____/16:00453603 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11310/16:10321857

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.snb.2015.11.136" target="_blank" >http://dx.doi.org/10.1016/j.snb.2015.11.136</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.snb.2015.11.136" target="_blank" >10.1016/j.snb.2015.11.136</a>

Jazyk výsledku

angličtina

Název v původním jazyce

A miniaturized electrode system for voltammetric determination of electrochemically reducible environmental pollutants

Popis výsledku v původním jazyce

A newly designed miniaturized electrode system (MES) based on a mercury meniscus modified silver solid amalgam electrode as the working electrode was developed for voltammetric determination of electrochemically reducible organic compounds in small sample volumes. Genotoxic 2-aminofluoren-9-one (2-AFN) was chosen as a model environmental pollutant in this study to test the performance of the introduced MES. The determination of 2-AFN was carried out by differential pulse voltammetry in 100 μL samples under following conditions, using two different ways of air oxygen removal: (i) a supporting electrolyte methanol–Britton–Robinson (BR) buffer of pH 4.0 (1:9, v/v), with regeneration potentials Ereg,1 = 0 mV and Ereg,2 = 1200 mV and with oxygen removal by bubbling with nitrogen, and (ii) a supporting electrolyte methanol–BR buffer of pH 10.0 (1:9, v/v), with regeneration potentials Ereg,1 = 200 mV and Ereg,2 = 1600 mV and with oxygen removal by the addition of solid sodium sulfite as a reducing agent. The calibration curves were measured in the concentration range from 1 to 100 μmol L1 of 2-AFN, with the limits of quantification about 1 μmol L1 reached in both media. The practical applicability of the newly developed voltammetric methods using the MES was successfully verified on the direct determination of 2-AFN in model samples of drinking and river water.n

Název v anglickém jazyce

A miniaturized electrode system for voltammetric determination of electrochemically reducible environmental pollutants

Popis výsledku anglicky

A newly designed miniaturized electrode system (MES) based on a mercury meniscus modified silver solid amalgam electrode as the working electrode was developed for voltammetric determination of electrochemically reducible organic compounds in small sample volumes. Genotoxic 2-aminofluoren-9-one (2-AFN) was chosen as a model environmental pollutant in this study to test the performance of the introduced MES. The determination of 2-AFN was carried out by differential pulse voltammetry in 100 μL samples under following conditions, using two different ways of air oxygen removal: (i) a supporting electrolyte methanol–Britton–Robinson (BR) buffer of pH 4.0 (1:9, v/v), with regeneration potentials Ereg,1 = 0 mV and Ereg,2 = 1200 mV and with oxygen removal by bubbling with nitrogen, and (ii) a supporting electrolyte methanol–BR buffer of pH 10.0 (1:9, v/v), with regeneration potentials Ereg,1 = 200 mV and Ereg,2 = 1600 mV and with oxygen removal by the addition of solid sodium sulfite as a reducing agent. The calibration curves were measured in the concentration range from 1 to 100 μmol L1 of 2-AFN, with the limits of quantification about 1 μmol L1 reached in both media. The practical applicability of the newly developed voltammetric methods using the MES was successfully verified on the direct determination of 2-AFN in model samples of drinking and river water.n

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

Sensors and Actuators B - Chemical

ISSN

0925-4005

e-ISSN

—

Svazek periodika

227

Číslo periodika v rámci svazku

MAY 2016

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

8

Strana od-do

263-270

Kód UT WoS článku

000369944200034

EID výsledku v databázi Scopus

2-s2.0-84952776389