Citation: Cai Peixiang , Yu Xinzhi , Chen Yongkang . Study on Polarographic Determination of Alcohols and Its Mechanism. Chinese Journal of Analytical Chemistry, 1995, 23(6): 617-620. [复制]
Study on Polarographic Determination of Alcohols and Its Mechanism
Alcohols, after in situ derivatization to the corresponding alkyl xanthates under phase-transfer catalysis, were determined in aqueous solution by differential-pulse polarogra-phy.A supporting electrolyte system containing Eosin was proposed.The catalysis effect of Eosin on the reduction of xanthates at DME was found, and the special law of peak potential changing with different carbon number of alcohols was obtained.The method can be used for the determination of low carbon number alcohols which are water-soluble, and has been applied successfully to the determination of ethanol in commercial beers.