The enantiomer residues of metalaxyl, napropamide, triticonazole and metconazole were detected in soil by Qu EChERS-ultra performance liquid chromatography-tandem mass spectrometry（UPLC-MS/MS）. The soil sample was e...The enantiomer residues of metalaxyl, napropamide, triticonazole and metconazole were detected in soil by Qu EChERS-ultra performance liquid chromatography-tandem mass spectrometry（UPLC-MS/MS）. The soil sample was extracted with acetonitrile containing 1% acetic acid and purified using Qu ECh ERS method. Quantitative analysis for the enantiomers of these four chiral pesticides was performed in MS in multi-response monitoring（MRM） mode by external standard method. All enantiomers showed good linearity in the range of 0.5 to 50 μg/L. The average recoveries of enantiomers in soil were 81.74% to 105.79% with relative standard deviations（RSDs） from 3.69% to 7.86%. The method quantitative limit（MQL） was 5.3-30.3 ng/kg. The method can be used for rapid screening and determination of chiral pesticides in soil.展开更多
基金Supported by the Special Fund for Basic Scientific Research of Central Colleges,South-Central University for Nationalities(CZW15088)
文摘The enantiomer residues of metalaxyl, napropamide, triticonazole and metconazole were detected in soil by Qu EChERS-ultra performance liquid chromatography-tandem mass spectrometry（UPLC-MS/MS）. The soil sample was extracted with acetonitrile containing 1% acetic acid and purified using Qu ECh ERS method. Quantitative analysis for the enantiomers of these four chiral pesticides was performed in MS in multi-response monitoring（MRM） mode by external standard method. All enantiomers showed good linearity in the range of 0.5 to 50 μg/L. The average recoveries of enantiomers in soil were 81.74% to 105.79% with relative standard deviations（RSDs） from 3.69% to 7.86%. The method quantitative limit（MQL） was 5.3-30.3 ng/kg. The method can be used for rapid screening and determination of chiral pesticides in soil.
