Effect of Surface-Active Compounds on the Stripping Voltammetric Response of Bismuth Film Electrodes
作者： Joseph Wang , Randhir Prakash Deo , Sompong Thongngamdee , Bozidar Ogorevc
DOI: 10.1002/1521-4109(200110)13:14<1153::AID-ELAN1153>3.0.CO;2-I
关键词:
摘要: The influence of model surface-active macromolecules on the stripping voltammetric response bismuth film electrodes was evaluated. Gelatin, albumin, humic acid, and Triton X-100 were used as representative surfactants, while lead cadmium employed test metal ions. adsorption these surfactants onto electrode caused a gradual decrease peaks. faster larger suppressions observed at (compared to mercury one) in presence albumin reflect differences kinetics equilibrium electrodes. surfactant interference can be circumvented using permselective/protective Nafion coating. effective resistance effects makes Nafion-coated very attractive for practical applications. A Nafion-modified is applied measurements large sample-instrument distances.
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