Comparison and Application Study of 33 Prohibited Pesticide Testing Pre treatment Methods in Jiujie Tea
Objective To screen for 33 prohibited pesticide residue detection methods in Jiujie tea,and provide method-ological basis for the detection of Jiujie tea samples.Methods According to the Chinese Pharmacopoeia(2020 edition),the extraction and purification effects of five pretreatment methods were systematically compared to select the optimal meth-od.Results Taking into account the extraction and purification effects,the rapid sample processing method is the most suit-able pre-treatment method for detecting 33 banned pesticide residues in Jiujie tea.After processing the test samples and de-tecting them by liquid chromatography tandem mass spectrometry and gas chromatography tandem mass spectrometry,the 33 banned pesticides showed a good linear relationship.At a concentration of 100％,the spiked recovery rates of 33 banned pesticides ranged from 68.57％to 117.79％,with relative standard deviations(RSD)below 6.4％.Conclusion This method is simple,fast,efficient,and accurate,and is suitable for residue detection of 33 banned pesticides in Jiujie tea.
Jiujie tea33 banned pesticidesPre processing methodsTandem mass spectrometryResidual detection
万方数据
维普
