Title: Determination of Carbamates Residues in Tobacco by LC-MS-MS
Abstract: In order to develop a method for the determination of residues of 11 carbamate pesticides in tobacco,liquid chromatography-mass /mass spectrometry was applied.Pesticide residues were extracted with acetone/water,the extract was liquid-liquid distributed by dichloromethane and cleaned up by NH2 column. The samples were separated by reversed-phase liquid chromatography,and the eluent was determined by LC-MS-MS in the multiple reaction monitoring mode,and with D7carbaryl as an internal standard.The results showed that: when the mass concentrations of added standards were 0.05,0.2,0.4 μg/g,the average recovery was from 69.2% to 121.0% and the relative standard deviation was from 1.0% to 12.0%.It satisfied the requirements of multi-pesticide residue analysis.
Publication Year: 2008
Publication Date: 2008-02-12
Language: en
Type: article
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