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DETERMINATION OF TRACE SODIUM SULFHYDRYL ACETATE IN THE PRESENCE OF COPPER(Ⅱ) WITH ADSORPTIVE VOLTAMETRY

Zhu Yaer(Department of Pharmacy, Zhejiang Medical University)Sun Ying(Hangzhou Jiangnan Food Industrial CO. Ltd)  
The adsorptive voltametric behavior of trace sodium sulfhydryl acetate in the presence ofcopper (Ⅱ) was studied with HMDE. It was thought that the electrode process was chemicalreaction-adsorpted preconcentrated-electrode reaction, i. e. CAE, and the reaction formula wasput forward by determination of the transfered electrons,reactive hydrion and complex ratio. InBritton-Robinson buffer solution(pH=3. 4),a sensitive reduction peak of sodium sulfhydryl acetate was observed, with a good linear relationship between the peak and the concentration in therange of 1.0×10-9~1.0×10-7 mol/L. When it was preconcentrated for 10 min, the detectionlimit was 2.0×10-10mol/L. This method was satis factory for the determination of trace sodiumsulfhydryl acetate in human hair and nail.
【CateGory Index】: R151
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