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CuII-poly (dithiooxamide) film coated anion selective electrode

โœ Scribed by Young-Tae Gong; Mi-Sook Won; Yoon-Bo Shim; Su-Moon Park

Book ID
102833046
Publisher
John Wiley and Sons
Year
1996
Tongue
English
Weight
676 KB
Volume
8
Category
Article
ISSN
1040-0397

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โœฆ Synopsis

Electrochemical deposition of a solid state anion selective membrane for thiocyanate and thiosulfate ions has been made from a 0.050 M dithiooxamide solution in 0.10 M sulfuric acid on a copper coated platinum electrode and its performance evaluated. The solid state membrane electrode displays excellent linearities with slopes of 59.2 =t 0.5 and 98.6 f 0.6mV/decade and detection limits of 7 x lo-' and 4 x M for SCN-and S20:--, respectively, high selectivity over other anions, and response time of about 6 s. The optimum pH for the electrode is around 6 in an acetate buffer, although it is usable in a wide pH range. The electrode was shown to be rugged and stable for at least a month and give reproducible responses if stored in an inert atmosphere.

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