Determination of Thioglycolic acid in the presence of Copper(II) by Adsorptive Stripping Voltammetry

흡착 벗김 전압전류법에 의한 구리이온(II) 존재하에서 티오글리콜산의 정량

  • 홍미정 (성심여자대학교 화학과) ;
  • 권영순 (성심여자대학교 화학과)
  • Received : 1994.12.05
  • Published : 1995.03.25

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 $1{\times}10^{-4}M$, an adsorption accumulation potential -0.2V, an adsorption accumulation time 60 sec and a scan rate 20mV/sec. A detection limit of $1{\times}10^{-9}M$ 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

Acknowledgement

Supported by : 성심여자대학교