"Vyu\u017Eit\u00ED katalytick\u00FDch reakc\u00ED na rtu\u0165ov\u00FDch elektrod\u00E1ch pro elektrochemick\u00E9 stanoven\u00ED metalothioneinu"@cs . "Vacek, Jan" . . . . "Application of catalytic reactions on a mercury electrode for electrochemical detection of metallothioneins"@en . "RIV/00216224:14310/04:00011232!RIV08-AV0-14310___" . . "RIV/00216224:14310/04:00011232" . "2" . . "metallothionein; electrochemical analysis; catalytic reactions; peak H; Brdicka reaction"@en . "5"^^ . "98" . "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 in the 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 method such as de"@en . "Vyu\u017Eit\u00ED katalytick\u00FDch reakc\u00ED na rtu\u0165ov\u00FDch elektrod\u00E1ch pro elektrochemick\u00E9 stanoven\u00ED metalothioneinu. MTs pat\u0159\u00ED do skupiny oligo- a polypeptid\u016F, kter\u00E9 hraj\u00ED d\u016Fle\u017Eitou roli v metabolismu \u017Eivo\u010Dich\u016F, rostlin i mikroorganism\u016F a ta spo\u010D\u00EDv\u00E1 p\u0159edev\u0161\u00EDm v detoxikaci organism\u016F. Pr\u00E1ce pojedn\u00E1v\u00E1 o elektroanalytick\u00E9m stanoven\u00ED MTs, kter\u00E9 je zalo\u017Eeno na katalytick\u00FDch procesech vod\u00EDku prob\u00EDhaj\u00EDc\u00EDh na rtutov\u00E9 elektrod\u011B v oblasti negativn\u00EDch potenci\u00E1l\u016F. Krom\u011B Brdickovy reakce je uva\u017Eov\u00E1na i Heyrovsk\u00E9ho presodiova katalytick\u00E1 vlna. Bylo zji\u0161t\u011Bno, \u017Ee za katalytick\u00E9 sign\u00E1ly jsou zodpov\u011Bdny SH skupiny v molekule MTs. Nejvy\u0161\u0161\u00ED citlivost p\u0159i stanoveni MT byla pozorov\u00E1na p\u0159i aplikaci deriva\u010Dn\u00ED chronopotenciometrick\u00E9 stripping anal\u00FDzy (CPSA)." . "166 - 173" . . . . "Klejdus, Bo\u0159ivoj" . "Application of catalytic reactions on a mercury electrode for electrochemical detection of metallothioneins"@en . . "594069" . . . . . "14310" . "Chemick Listy" . "Havel, Ladislav" . "[7FDA60986D6F]" . "CZ - \u010Cesk\u00E1 republika" . . "Vyu\u017Eit\u00ED katalytick\u00FDch reakc\u00ED na rtu\u0165ov\u00FDch elektrod\u00E1ch pro elektrochemick\u00E9 stanoven\u00ED metalothioneinu" . . . "8"^^ . "Vyu\u017Eit\u00ED katalytick\u00FDch reakc\u00ED na rtu\u0165ov\u00FDch elektrod\u00E1ch pro elektrochemick\u00E9 stanoven\u00ED metalothioneinu"@cs . "Vyu\u017Eit\u00ED katalytick\u00FDch reakc\u00ED na rtu\u0165ov\u00FDch elektrod\u00E1ch pro elektrochemick\u00E9 stanoven\u00ED metalothioneinu. MTs pat\u0159\u00ED do skupiny oligo- a polypeptid\u016F, kter\u00E9 hraj\u00ED d\u016Fle\u017Eitou roli v metabolismu \u017Eivo\u010Dich\u016F, rostlin i mikroorganism\u016F a ta spo\u010D\u00EDv\u00E1 p\u0159edev\u0161\u00EDm v detoxikaci organism\u016F. Pr\u00E1ce pojedn\u00E1v\u00E1 o elektroanalytick\u00E9m stanoven\u00ED MTs, kter\u00E9 je zalo\u017Eeno na katalytick\u00FDch procesech vod\u00EDku prob\u00EDhaj\u00EDc\u00EDh na rtutov\u00E9 elektrod\u011B v oblasti negativn\u00EDch potenci\u00E1l\u016F. Krom\u011B Brdickovy reakce je uva\u017Eov\u00E1na i Heyrovsk\u00E9ho presodiova katalytick\u00E1 vlna. Bylo zji\u0161t\u011Bno, \u017Ee za katalytick\u00E9 sign\u00E1ly jsou zodpov\u011Bdny SH skupiny v molekule MTs. Nejvy\u0161\u0161\u00ED citlivost p\u0159i stanoveni MT byla pozorov\u00E1na p\u0159i aplikaci deriva\u010Dn\u00ED chronopotenciometrick\u00E9 stripping anal\u00FDzy (CPSA)."@cs . . "Vyu\u017Eit\u00ED katalytick\u00FDch reakc\u00ED na rtu\u0165ov\u00FDch elektrod\u00E1ch pro elektrochemick\u00E9 stanoven\u00ED metalothioneinu" . . "2"^^ . "0009-2770" . "Trnkov\u00E1, Libu\u0161e" . . "P(GA203/02/0422), P(IAA1163201)" . "Kizek, Ren\u00E9" .