LC-MS/MSによる緑茶中の残留農薬一斉試験法

概要

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A multiresidue method for the determination of pesticides in green tea was developed by modification of Japanese official method. In this method, a sample was allowed to swell in water before extraction with acetonitrile. After the removal of water by salting-out, the crude extract was passed through an ODS mini-column, and then purified by a tandemized graphitized carbon/primary secondary amine (PSA) mini-column and graphitized carbon mini-column, prior to the determination by LC-MS/MS. The recoveries of 135 compounds from fortified green tea after a spike at maximum residue levels (MRLs) set by Japan, were in the ranged from 70 to 106%, except for 15 compounds, and the relative standard deviations were within the required analytical performance criteria for pesticide residues in Japan. The limits of quantitation (LOQs) of all the tested compounds were below MRLs set by Japan.
日本食品化学学会の論文
2012-08-24