Utilization of catalytic reactions on mercury electrode for the electrochemical determination of metalothioneins

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F04%3A00009640" target="_blank" >RIV/00216224:14310/04:00009640 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

čeština

Original language name

Využití katalytických reakcí na rtuťové elektrodě pro elektrochemické stanovení metalothioneinů

Original language description

Metallothioneins (MTs) belong to a group of oligo- and polypeptides which play an important role in the metabolism of metals in animals, plants and microorganisms. The metabolic function of MTs consists not only in detoxication of an organism but also inthe homeostasis of essential metals. This paper reports a novel approach to electroanalysis of MTs. The electrochemical determination of MTs is based on catalytic processes which proceed at very negative potentials on mercury electrodes (from -1.7 V to-1.9 V vs. Ag/AgCl/KCl). These processes accompanied by evolution of hydrogen from supporting electrolyte components, include the Heyrovsky presodium wave and/or Brdicka reaction. It was found that SH groups present in MTs are responsible for catalytic processes. The catalytic signal of a MT at nanomolar concentrations can be detected on mercury electrodes using potentiostatic electrochemical methods. The highest sensitivity in the determination of MTs was observed with a galvanostatic m

Czech name

Využití katalytických reakcí na rtuťové elektrodě pro elektrochemické stanovení metalothioneinů

Czech description

Metallothioneins (MTs) belong to a group of oligo- and polypeptides which play an important role in the metabolism of metals in animals, plants and microorganisms. The metabolic function of MTs consists not only in detoxication of an organism but also inthe homeostasis of essential metals. This paper reports a novel approach to electroanalysis of MTs. The electrochemical determination of MTs is based on catalytic processes which proceed at very negative potentials on mercury electrodes (from -1.7 V to-1.9 V vs. Ag/AgCl/KCl). These processes accompanied by evolution of hydrogen from supporting electrolyte components, include the Heyrovsky presodium wave and/or Brdicka reaction. It was found that SH groups present in MTs are responsible for catalytic processes. The catalytic signal of a MT at nanomolar concentrations can be detected on mercury electrodes using potentiostatic electrochemical methods. The highest sensitivity in the determination of MTs was observed with a galvanostatic m

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

CG - Electrochemistry

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

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

Publication year

2004

Confidentiality

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

Name of the periodical

Chem. listy

ISSN

0009-2770

e-ISSN

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Volume of the periodical

2004

Issue of the periodical within the volume

98

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

8

Pages from-to

166-173

UT code for WoS article

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EID of the result in the Scopus database

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