Title: Rapid UPLC-MS/MS Determination of Residual of 11 Carbamate Pesticides in Leafy Vegetables
Abstract: Residual amounts of 11 carbamate were determined by UPLC-MS/MS.The sample was extracted with acetonitrile and extract was purified on NH2 SPE column.The eluate was separated by gradient elution with methanol,formic acid and water solution of different ratio on Acquity UPLCTM BEH C18(100 mm×2.1 mm,1.7 μm) column and determined by LC-MS/MS,using positive-ion electrospray ionization in multiple reaction monitoring(MRM) mode.External standard method was used to determine the residue contents with a good linear relationship(r20.994).The limits of quantification(LOQ) was 0.001 mg/kg~0.004 mg/kg.The recovery ranges were from 80.4% to 99.8% with the relative standard deviations(RSDs) between 3.4% and 10.8%.As a screening method,the developed procedure is suitable for the determination and confirmation of the drug residues in leafy vegetables samples.
Publication Year: 2012
Publication Date: 2012-01-01
Language: en
Type: article
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