Measurement Method of Carbamate Pesticides Residual Quantity in Cucumber and Tomato by Using HPLC

A rapid,simple analysis method for determinating residues of 3-Hydroxycarbofuran,Metolcarb,Propoxur,Carbofuran,Carbaryl,Isopricarb,Pirimicarb and BMPC in cucumber and tomato by the high performance liquid chromatography was studied.The sample was extracted with acetonitrile and cleaned up by a column of Aminopropyl.The quantification of the carbamate pesticides residue were established by the high performance liquid chromatography with a fluorescence detector,a DB-(C8) column,a mixture of methanol + water as mobile phase,with post column derivatization instrument that improved sensitivity or better selectivity with lower detection limits.The qualitative and the quantitative analyses were carried out based on the retention time and peak area respectively.All pesticides were added three kinds of densities(0.05 mg·kg~(-1), 0.1 mg·kg~(-1),0.5 mg·kg~(-1)) in recovery experiment.The average recoveries of the analytical method for the fortified samples in cucumber and tomato were 70%～105%,with the coefficient of variation below 10%.The minimum detection limits for eight kinds of carbamate pesticides were in a range of 0.0010～0.0075 mg·kg~(-1).