Analysis of chlorfenapyr and chlorantraniliprole 15％SC by ultra performance liquid chromatography
Objective To establish the method to detect the chlorfenapyr and chlorantraniliprole 15％SC by ultra performance liquid chromatography(UPLC).Methods The sample was extracted by acetonitrile ultrasonically.Quantitative analysis of the active ingredient was conducted using a Waters ACQUITY UPLC ® BEH C18 chromatographic column and variable wavelength photodiode array detection(PDA).The mobile phase was acetonitrile-water(60∶40,by vol),the mobile speed was 0.2 mL/min and the detecting wavelength was 196 nm.The quantitative analysis was performed using external standard calibration curve.Results The linear range for the method was 20～100 mg/L(r2=0.999 4 and 0.999 9).The average recovery rates were 99.58％and 99.81％,respectively.The coefficient of variations were 2.92％and 1.26％(n=6).The quantitative limits of chlorfenapyr and chlorantraniliprole were 6.71×10-3and 9.23×10-3 mg/L,respectively(10S/N).Conclusion The method is an ideal analysis method with the advantages of simple,fast,high precision and good linear correlations.
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