Ion-chromatographic determination of chloride and fluoride in electrolyte from the halogen tin-plating process.
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).
Korth
W
W
Department of Chemistry, University of Wollongong, P.O. Box 1144, Wollongong, N.S.W. 2500, Australia.
Ellis
J
J