Research on Pesticide Residue Detection Methods and Limit Standards in Lycium barbarum L.
OBJECTIVE To develop the limited standard and supporting detection methods of commonly used pesticides in Lycium barbarum L.(L.barbarum).METHODS In previous research,the"the Principle of Conversion of Limit Standards of Traditional Chinese Medicine in 〈GB 2763 national food safety standard-maximum residue limits for pesticides in food〉"have been drafted.In this research,the L.barbarum was used as the research object to study the conversion scope,risk assessment,detection methods and conversion judgment principle.RESULTS A method for the determination of 13 pesticide residues in the L.barbarum was established by using acetonitrile extraction and HLB column purification.And the GC-MS/MS and LC-MS/MS technology were used to detect the pesticide residues.In addition,the maximum residue limit of 13 pesticides in L.barbarum was finally formulated by sample determination.CONCLUSION The specific implementation steps are provided for the conversion of GB 2763 standard to traditional Chinese medicine standard in this study,and it is of great significance for promoting the connection between planting and circulation supervision of L.barbarum.
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