Abstract
A method was developed for the simultaneous determination of 19 carbamate pesticides residues in spinach,cucumber,scallion,fungus,mushroom,agaric and carrot by ultra performance liquid chromatography tandem mass spectrometry(UPLCMS/MS) combined with isotope internal standard method.The vegetable and mushroom samples were extracted with V(acetone)∶V(acetonitrile)=85∶15 then purified by gel permeation chromatography(GPC) or solid phase extraction(SPE).The recoveries ranged from 70.1% to 95.7% with the cleaning method of GPC and from 70.2% to 94.9% with the cleaning method of primary-secondary amine(PSA) SPE.The limits of detection(LOD) were 1×10-5 g/kg.The method showed a good linear relationship with the correlation coefficients over 0.99.This method is practical,accurate and highly sensitive.
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