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Simultaneous determination of tin and lead by anodic stripping voltammetry in aqueous-alcoholic medium. Application to the direct determination of these elements in canned foods

par Debacker, P.;Vandenbalck, Jean ;Patriarche, Gaston ;Christian, Gary D.
Référence Microchemical journal, 26, 2, page (192-197)
Publication Publié, 1981

Article révisé par les pairs

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Résumé :

Tin and lead may be determined in mixture in a solution of 50% methanol-50% isopropanol containing l M hydrochloric acid. The solvent-electrolyte composition affects both the relative a.s.v. peak heights and peak resolution. Iron(III) in large quantities does not interfere, and mixtures of copper, lead, tin, and cadmium may be analyzed. Juice samples can be analyzed without digestion, by simple 1:5000 dilution (5 μl to 25 ml) with the above solvent electrolyte. It was demonstrated that tin gradually dissolves from cans containing the juice. © 1981.