Title: Simultaneous Determination of 40 Pesticides Residue in Bamboo Shoots by GC-MS Method with Solid Phase Extraction
Abstract: A multiresidue analytical method was developed for the simultaneous determination of 40 pesticide residues in bamboo shoots based on solid phase extraction(SPE) coupled with gas chromatography-mass spectrometry(GC-MS).The pesticide residues in bamboo shoots were extracted with acetonitrile by homogenate extraction technology,concentrated after salting out.The extract was cleaned up on a solid phase extraction column with 500 mg primary secondary amine(PSA),eluted with acetone.The eluate was evaporated to near dryness and redissolved with n-hexane.The analytes were confirmed and determined by GC-MS under selected ion monitoring mode.The results showed that the calibration curves of 40 pesticide residues were linear in the certain concentration range with correlation coefficients of 0.994 6-0.999 8.The average recoveries at three spiked levels were in the range of 68%-119% with relative standard deviations(RSDs) of 1.1%-20.0%.The limits of quantitation(LOQs,S/N=10)of 40 residues were in the range of 0.01-0.05 mg/kg.The proposed method was sensitive and reliable for the determination of 40 pesticide residues in bamboo shoots.
Publication Year: 2011
Publication Date: 2011-01-01
Language: en
Type: article
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