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Determination of tin traces in water samples by adsorptive stripping voltammetry

✍ Scribed by F. Heppeler; S. Sander; G. Henze

Publisher: Elsevier Science
Year: 1996
Tongue: English
Weight: 440 KB
Volume: 319
Category: Article
ISSN: 0003-2670
DOI: 10.1016/0003-2670(95)00480-7

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✦ Synopsis

A sensitive and selective adsorptive stripping voltammetric method was employed to determine traces of tin in water samples. The spontaneously formed tin complex with 2,5-dichloro-1,4-dihydroxy-3,6-benzoquinone (chloranilic acid) is adsorbed at the surface of a mercury drop electrode. The analyte can be preconcentrated in this way applying a potential between + 100 and -200 mV to the working electrode. The adsorption behaviour is investigated by means of alternating current voltammetry. Tin traces were determined after UV-digestion in drainage water samples.

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