Analytical Sciences
Online ISSN : 1348-2246
Print ISSN : 0910-6340
ISSN-L : 0910-6340
Adsorptive Stripping Differential Pulse Voltammetric Determination of Trace Amounts of Tin in Biological Samples
Zhiqiang GAOKOK Siong SIOW
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1996 Volume 12 Issue 2 Pages 267-271

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Abstract

A procedure for the direct determination of tin in biological samples is described. Based on the formation of the adsorptive complex of tin with 8-hydroxyquinoline (oxine), it is possible to determine subnanomolar levels of tin after a few minutes of stirred accumulation at-0.25V. The detection limits are 0.35nM (40ppt) and 70pM (8.3ppt) for 1- and 5-min accumulation periods, respectively. The standard deviation at 50nM is 1.4%. Possible interferences were investigated. This procedure was applied to determine trace amounts of tin in blood, serum and plants.

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