[Effect of tin on rats. 1. Inverse voltammetric determination of tin in the presence of lead in biological material after extraction].

By means of inverse polarography, the authors determined tin selectively after double extraction with diethylammonium diethyl dithiocarbamate (DADDTC) in perchloric solution. The recovery rates were: in potatoes, 91.7 +/- 5.8%; in beef kidney, 85.0 +/- 22.7%; in beef liver 79.9 +/- 13.8%; and in milk, 69.8 +/- 11.4%. Possible interferences from other elements with the tin determination are discussed.