Využití elektrodepozice pro stanovení zlata elektrotermickou atomovou absorpční spektrometrií

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F07%3A00022315" target="_blank" >RIV/00216224:14310/07:00022315 - 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

Utilization of electrodeposition for electrothermal atomic absorption spectrometry determination of gold

Popis výsledku v původním jazyce

Gold was determined by electrothermal atomic absorption spectrometry after electrochemical preconcentration on the graphite ridge probe used as a working electrode. The probe surface was electrochemically modified with Pd, Re and the mixture of both. Theelectrolysis of gold was performed under galvanostatic control at 0.5 mA. The relative standard deviation for the determination of 2000 ng l-1 Au was not higher than 5.6 % (n=8) for 2 min electrodeposition. The sensitivity of gold determination was reproducible for 300 electrodeposition and atomization cycles. When the probe surface was modified with a mixture of Pd and Re the detection limit was 31 ng l-1 for 2 min electrodeposition, 3.7 ng l-1 for 30 min, 1.5 ng l-1 for one hour and 0.4 ng l-1 for 4hours electrodeposition, respectively. The procedure was applied to the determination of gold in river water samples.

Název v anglickém jazyce

Utilization of electrodeposition for electrothermal atomic absorption spectrometry determination of gold

Popis výsledku anglicky

Gold was determined by electrothermal atomic absorption spectrometry after electrochemical preconcentration on the graphite ridge probe used as a working electrode. The probe surface was electrochemically modified with Pd, Re and the mixture of both. Theelectrolysis of gold was performed under galvanostatic control at 0.5 mA. The relative standard deviation for the determination of 2000 ng l-1 Au was not higher than 5.6 % (n=8) for 2 min electrodeposition. The sensitivity of gold determination was reproducible for 300 electrodeposition and atomization cycles. When the probe surface was modified with a mixture of Pd and Re the detection limit was 31 ng l-1 for 2 min electrodeposition, 3.7 ng l-1 for 30 min, 1.5 ng l-1 for one hour and 0.4 ng l-1 for 4hours electrodeposition, respectively. The procedure was applied to the determination of gold in river water samples.

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)

Rok uplatnění

2007

Kód důvěrnosti údajů

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

Název periodika

Spectrochimica Acta Part B: Atomic Spectroscopy

ISSN

0584-8547

e-ISSN

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Svazek periodika

62

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

5

Strana od-do

283-287

Kód UT WoS článku

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EID výsledku v databázi Scopus

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