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- E-ISSN 2288-8985
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- P-ISSN1225-0163
- E-ISSN2288-8985
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Determination of Thioglycolic acid in the presence of Copper(II) by Adsorptive Stripping Voltammetry
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
1995, v.8 no.1, pp.25-32
Hong,
M., &
Kwon,
Y.
(1995). Determination of Thioglycolic acid in the presence of Copper(II) by Adsorptive Stripping Voltammetry. Analytical Science and Technology, 8(1), 25-32.
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Abstract
Determination method of trace thioglycolate has been studied by adsorptive stripping voltammetry. Copper(II)-thioglycolate complex is adsorbed at the hanging mercury drop electrode and stripped during cathodic scan. Electrolyte was used pH 6.5 phosphate and pH 9.5 borate buffer solutions. Optimal conditions were a copper(II) concentration <TEX>$1{\times}10^{-4}M$</TEX>, an adsorption accumulation potential -0.2V, an adsorption accumulation time 60 sec and a scan rate 20mV/sec. A detection limit of <TEX>$1{\times}10^{-9}M$</TEX> thioglycolate was obtained. The method was applied to the determination of thioglycolate in cold wave fluids and depilating creams.
- keywords
- Thioglycolic acid, Adsorptive Stripping Voltammetry
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