Ion-chromatographic determination of chloride and fluoride in electrolyte from the halogen tin-plating process |
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| Authors: | Korth W Ellis J |
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| Institution: | Department of Chemistry, University of Wollongong, P.O. Box 1144, Wollongong, N.S.W. 2500, Australia. |
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| Abstract: | A simple and rapid procedure is proposed for the determination of chloride and free fluoride in tin electroplating fluid. Suppressor-column ion-chromatography is used after oxidation of hexafluorostannate(II) to hexafluorostannate(IV) with hydrogen peroxide. Concurrent determination of tin(II) and total tin then allows calculation of the concentrations of fluoride, hexafluorostannate(II) and hexafluorostannate(IV). |
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