Electrochemical behaviour of metallothioneins on silver amalgam electrodes

0359944 - ÚFCH JH 2012 RIV CZ eng C - Konferenční příspěvek (zahraniční konf.)
Šestáková, Ivana - Josypčuk, Bohdan
Electrochemical behaviour of metallothioneins on silver amalgam electrodes.
Sborník přednášek. XXXI. Moderní elektrochemické metody. Ústí nad Labem: BEST servis, 2011 - (Navrátil, T.; Barek, J.), s. 145-148. ISBN 978-80-254-9634-3.
[Moderní elektrochemické metody /31./. Jetřichovice (CZ), 23.05.2011-27.05.2011]
Grant CEP: GA AV ČR IAA400400806; GA ČR GAP206/11/1638
Výzkumný záměr: CEZ:AV0Z40400503
Klíčová slova: metallothionein * silver amalgam electrodes * Brdička reaction
Kód oboru RIV: CG - Elektrochemie

Three different types of silver amalgam electrodes (p-AgSAE - polished silver solid amalgam electrode, m-AgSAE - mercury meniscus modified silver solid amalgam electrode and AgA-PE - silver amalgam paste electrode) were applied for voltammetric detection of metals bound in metallothionein (MT) molecule and for Brdička reaction with Co(III). The signals obtained with m-AgSAE and silver amalgam paste electrode correspond to signals observed on hanging mercury drop electrode (HMDE). Only p-AgSAE exhibits different behavior which is explained by the formation of AgMT. Formation of AgMT was demonstrated by dissapearance of Cd-Zn-MT peaks and by the increase of new peaks at -573 and -1050 mV, observed by differential pulse voltammetry on HMDE, when silver ions in excess were added to the Cd-Zn-MT solution.
Trvalý link: http://hdl.handle.net/11104/0197620