Interference by tin in AOAC dry-ash voltammetric method for determination of lead and cadmium in canned foods.

W. Holak, John Specchio

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Abstract

When lead and cadmium were determined in samples of canned food by the AOAC anodic stripping voltammetric method, an interference was observed which was believed to be tin(IV). This interference could cause false positive results for lead and cadmium. The electroactivity of tin(IV) was suppressed by increasing the concentration of tartaric acid in the supporting electrolyte from 0.005M to 0.1M after mixing with an equal volume of sample solution.

Original languageEnglish
Pages (from-to)857-859
Number of pages3
JournalJournal of the Association of Official Analytical Chemists
Volume71
Issue number4
Publication statusPublished - 1 Jul 1988

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