Zinc-Selective Membrane Electrode Using Tetrabutyl Thiuram Disulfide Neutral Carrier

A poly(vinyl chloride) membrane electrode that is highly sensitive and selective for zinc ions has been developed by using tetrabutyl thiuram disulfide neutral carrier. This electrode incorporated the ionophore along with o-nitrophenyloctyl ether as a plasticizing solvent mediator and potassium tetr...

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Veröffentlicht in:Analytical Sciences 1994/06/10, Vol.10(3), pp.409-412
Hauptverfasser: KOJIMA, Ryuji, KAMATA, Satsuo
Format: Artikel
Sprache:eng
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Zusammenfassung:A poly(vinyl chloride) membrane electrode that is highly sensitive and selective for zinc ions has been developed by using tetrabutyl thiuram disulfide neutral carrier. This electrode incorporated the ionophore along with o-nitrophenyloctyl ether as a plasticizing solvent mediator and potassium tetrakis(p-chlorophenyl)borate as anion excluder; it exhibited a linearity range of 10-1-10-6M with a Nernstian slope of 28.0mV per decade at 25±1°C. The membrane electrode showed a good response to zinc ions in the useful pH range of 3.5 to 6.5, where interferences arise only from a few transition metals such as CuII and PbII.
ISSN:0910-6340
1348-2246
DOI:10.2116/analsci.10.409