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Utilization of electrodeposition for electrothermal atomic absorption spectrometry determination of gold

The result's identifiers

  • Result code in 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>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Utilization of electrodeposition for electrothermal atomic absorption spectrometry determination of gold

  • Original language description

    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.

  • Czech name

    Využití elektrodepozice pro stanovení zlata elektrotermickou atomovou absorpční spektrometrií

  • Czech description

    Zlato bylo stanoveno atomovou absorpční spektrometrií s elektrotermickou atomizací po elektrochemické prekoncentraci na grafitové hřebenové sondě použité jako pracovní elektroda. Povrch sondy byl elektrochemicky modifikován Pd, Re a jejich směsí. Elektrolýza zlata byla provedena galvanostaticky při 0.5 mA. RSD pro stanovení 2000 ng l-1 Au nebyla vyšší než 5.6 % (n=8) pro 2 min elektrodepozice. Citlivost stanovení zlata byla reprodukovatelná pro 300 elektrodepozičních a atomizačních cyklů. Když povrch sondy byl modifikovaný směsí Pd a Re detekční limit byl 31 ng l-1 pro 2 min elektrodepozice, 3.7 ng l-1 pro 30 min, 1.5 ng l-1 pro 1 hod a 0.4 ng l-1 pro 4 hod elektrodepozice. Postup byl aplikován pro stanovení zlata v říčních vodách.

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    CB - Analytical chemistry, separation

  • OECD FORD branch

Result continuities

  • Project

  • Continuities

    Z - Vyzkumny zamer (s odkazem do CEZ)

Others

  • Publication year

    2007

  • Confidentiality

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

Data specific for result type

  • Name of the periodical

    Spectrochimica Acta Part B: Atomic Spectroscopy

  • ISSN

    0584-8547

  • e-ISSN

  • Volume of the periodical

    62

  • Issue of the periodical within the volume

    3

  • Country of publishing house

    NL - THE KINGDOM OF THE NETHERLANDS

  • Number of pages

    5

  • Pages from-to

    283-287

  • UT code for WoS article

  • EID of the result in the Scopus database