Abstract
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 - 10-6 M with a Nernstian slope of 28.0 mV 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 Cu11 and Pb11.
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Kojima, R., Kamata, S. Zinc-Selective Membrane Electrode Using Tetrabutyl Thiuram Disulfide Neutral Carrier. ANAL. SCI. 10, 409–412 (1994). https://doi.org/10.2116/analsci.10.409
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DOI: https://doi.org/10.2116/analsci.10.409