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Coated-wire ion-selective electrode for the determination of gold(III)

✍ Scribed by J.A. Ortuño; T. Pérez Ruiz; C. Sánchez-Pedreño

Publisher
Elsevier Science
Year
1986
Tongue
English
Weight
260 KB
Volume
185
Category
Article
ISSN
0003-2670

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✦ Synopsis

A coated-wire gold(III)-selective electrode based on the 1,2,4,6tetraphenylpyridinium tetrachloroaurate(II1) ion-pair is described. The response is Nernstian in the gold concentration range lo-'-3 X 10d (slope 59.0 mV/pAu). Of the 22 ions tested, only the interference of thallium(II1) is important. The electrode is applied to the determination of gold in an Ag-Pd-Au alloy with satisfactory results.

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