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The differential pulse polarographic determination of trace amounts of tin and its application to zinc-aluminium alloys

Authors
Journal
Talanta
0039-9140
Publisher
Elsevier
Publication Date
Volume
26
Issue
5
Identifiers
DOI: 10.1016/0039-9140(79)80196-4

Abstract

Abstract A differential pulse polarographic procedure for the determination of 0.001–0.02% of tin in zinc-aluminium alloys is described. The tin is first separated from interfering elements such as copper and lead by homogeneous co-precipitation with aluminium succinate. The tin is determined polarographically in a 1 M hydrochloric acid + 4 M ammonium chloride electrolyte. After the tin has been masked with alkaline citrate a second polarogram is recorded to ascertain whether residual lead is present and, if so, a correction is applied.

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