Stripping Voltammetric Determination of Osmium

벗김 전압전류법에 의한 오스뮴 정량

  • 권영순 (가톨릭대학교 화학과) ;
  • 김소진 (가톨릭대학교 화학과) ;
  • 채명준 (한양대학교 자연과학대학 화학과)
  • Received : 1996.10.19
  • Published : 1997.04.25

Abstract

A stripping voltammetric scheme for the determination of osmium, based on the adsorptive accumulation of osmium in the presence of hydroxylamine, was described. Cyclic voltammetry was used to characterize the redox and interfacial processes. Optimal experimental conditions were found to be a stirred 0.05M hydroxylamine hydrochloride solution(pH 1.8), accumulation at -0.65V for 60s, and a differential pulse mode with a scan rate of 10mV/s. The detection limit was $6.3{\times}10^{-8}M$(12ppb) with the optimal condition.