Difficulties with the determination of mercury in foodstuffs by stripping voltammetry

V. N. Batalova, E. A. Zakharova, G. B. Slepchenko, M. V. Malygina

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

The main problems with the determination of mercury in foodstuffs by stripping voltammetry were analyzed. The conditions for obtaining the analytical signal from mercury(II) at a gold-graphite electrode and for reducing the effect of interfering substances were refined. A simplified procedure for the preparation of foodstuff samples by the chemical (HNO3 + H 2O2) and photochemical oxidation of samples was proposed. The determination conditions were optimized by the fractional factorial design of the experiments. It was shown that a gas-discharge XeBr excilamp can be used as an alternative to a mercury quartz lamp in the sample preparation of foodstuffs. The conditions for reducing the blank experiment and its contribution to the results of determination were considered.

Original languageEnglish
Pages (from-to)468-473
Number of pages6
JournalJournal of Analytical Chemistry
Volume59
Issue number5
DOIs
Publication statusPublished - May 2004

ASJC Scopus subject areas

  • Analytical Chemistry

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