Sonoelectroanalytical detection of lead at a bare copper electrode

DF Tibbetts, J Davis, RG Compton

    Research output: Contribution to journalArticle

    20 Citations (Scopus)

    Abstract

    The sonochemically facilitated, mercury free detection of Pb2+ at a copper electrode has been investigated as a means of simplifying the quantification of this important analyte and to minimise the interference of copper ion. The procedure relies upon maximising the formation of Pb-Cu intermetallic compounds leading to the emergence of a single, easily quantifiable stripping signal. Linear responses to Pb2+ were obtained with a sensitivity comparable to that obtained at a bare glassy carbon electrode. Interference from Cu2+, Zn2+ and Cd2+ was assessed on the copper electrode with no appreciable change in the Pb2+ voltammetric profile observed. In contrast, bare glassy carbon showed a significant change in Pb2+ voltammetric profile as Cu2+ was added, due to the formation of intermetallic species.
    Original languageEnglish
    Pages (from-to)412-414
    JournalFresenius' Journal of Analytical Chemistry
    Volume368
    Issue number4
    Publication statusPublished - Oct 2000

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