Abstract
A method for rapidly determining fifteen pesticides,such as pymetrozine and others,in tobacco with LC-MS/MS was developed.Samples were extracted by acetonitrile,cleaned up by dispersive solid-phase extraction and finally detected with LC-MS/MS.The results showed that the recoveries of the fifteen pesticides ranged from 70.43% to 117.81% at the standard′s levels of 0.1,0.25 and 0.5 μg/g,the relative standard deviation(RSD) ranged from 1.16% to 13.89%,and the limit of detection was from 0.004 to 0.030 μg/g.This method was suitable for the rapid analysis of multiple pesticide residues in batches of tobacco samples.
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