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《Chinese Journal of Analytical Chemistry》 2003-05
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Polarographic Determination of Carbofuran and Its Application

Zhao Yonggang, Yang Mingmin, Huang Zhiying, Zheng Xiuwen ( College of Sciences , Nanjing Agriculture University, Nanjing 210095)  
In a base solution of 0.2 mol/L NH3-NH4C1 at pH 8.8 , carbofuran produced a sensitive reduction peak by cyclic voltammetry and linear scanning voltammetry. The peak potential was-1.21 V(vs.SCE). The linear relation hold between the peak current and the carbofuran concentration in the range from 5 .0× 10-6 mol/L to 1 .0×10-4 mol/L (r =0.9995). The relative standard deviation of 5. 0 × 10-5 mol/L carbofuran for 6 parallel determinations was 0.2% . The peak also shows adsorptive characteristics. The mechanism of electrode reduction was discussed. The method has been applied to the determination of biodegradation of carbofuran products with satisfactory result. Degradation percentage of carbofuran was 98 % during 96 hours.
【CateGory Index】: O657.14
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