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  • Title: Interference by tin in AOAC dry-ash voltammetric method for determination of lead and cadmium in canned foods.
    Author: Holak W, Specchio JJ.
    Journal: J Assoc Off Anal Chem; 1988; 71(4):857-9. PubMed ID: 3417617.
    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.
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