Elektrochemické chování a analytické aplikace nurflurazonu na rtuťových elektrodách

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F07%3A00005777" target="_blank" >RIV/61989592:15310/07:00005777 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

ELECTROCHEMICAL BEHAVIOUR OF NORFLURAZON AT MERCURY ELECTRODES, AND ITS ANALYTICAL APPLICATION

Popis výsledku v původním jazyce

Norflurazon (systemic herbicide, Fig. 1) is reducible at mercury electrodes to the different extent depending on media acidity, area of mercury cathode and its contact time with an electrode surface. The electrode reaction, investigated using direct current and pulse voltammetry, controlled-potential coulometry, and HPLC-MS, is a combination of the electro-reduction and a kinetic process. Four-electron (by voltammetry) or six- electron (by coulometry) irreversible reduction of a norflurazon protonized form was observed in strongly acid media. Simple compounds (HCl, NH3) are released and five- membered pyrrole cycle is formed at electroconversion in these types of media. Only two-electron reduction proceeds in weakly acid solutions and no signal is observed in neutral pH values. A new diffusion wave strongly affected by kinetics is formed in alkaline media. Norflurazon was determined in 0.01 M HCl using differential pulse voltammetry and adsorptive stripping voltammetry with limits of d

Název v anglickém jazyce

ELECTROCHEMICAL BEHAVIOUR OF NORFLURAZON AT MERCURY ELECTRODES, AND ITS ANALYTICAL APPLICATION

Popis výsledku anglicky

Norflurazon (systemic herbicide, Fig. 1) is reducible at mercury electrodes to the different extent depending on media acidity, area of mercury cathode and its contact time with an electrode surface. The electrode reaction, investigated using direct current and pulse voltammetry, controlled-potential coulometry, and HPLC-MS, is a combination of the electro-reduction and a kinetic process. Four-electron (by voltammetry) or six- electron (by coulometry) irreversible reduction of a norflurazon protonized form was observed in strongly acid media. Simple compounds (HCl, NH3) are released and five- membered pyrrole cycle is formed at electroconversion in these types of media. Only two-electron reduction proceeds in weakly acid solutions and no signal is observed in neutral pH values. A new diffusion wave strongly affected by kinetics is formed in alkaline media. Norflurazon was determined in 0.01 M HCl using differential pulse voltammetry and adsorptive stripping voltammetry with limits of d

Druh

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

CEP obor

CB - Analytická chemie, separace

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2007

Kód důvěrnosti údajů

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

Název periodika

Acta Universitatis Palackianae Olomucensis, Facultas Rerum Naturalium, Chemica

ISSN

0232-0061

e-ISSN

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Svazek periodika

47

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

11

Strana od-do

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Kód UT WoS článku

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EID výsledku v databázi Scopus

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