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  • Title: The differential pulse polarographic determination of trace amounts of tin and its application to zinc-aluminium alloys.
    Author: Hitchen A.
    Journal: Talanta; 1979 May; 26(5):369-72. PubMed ID: 18962450.
    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 1M hydrochloric acid + 4M 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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