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Enantioselective Separation And Dissipation Of Prothioconazole And Its Major Metabolite Prothioconazole-Desthio Enantiomers In Tomato, Cucumber, And Pepper

文献类型： 外文期刊

作者： Xu, Jun;Jiang, Duoduo;Dong, Fengshou;Liu, Xingang;Li, Runan;Zheng, Yongquan;Tao, Yan;Wu, Xiaohu;Pan, Xinglu

作者机构：

关键词： Prothioconazole; Prothioconazole-Desthio; Enantioselective Separation; Enantioselective Dissipation; Sfc-Ms/Ms

期刊名称： JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY

ISSN： 0021-8561

年卷期： 2019 年 67 卷 36 期

页码：

收录情况： JCR（2021版） ; EI（2021版）

摘要： In this study, a simple and effective chiral analytical method was developed to monitor prothioconazole and prothioconazole-desthio at the enantiomeric level using supercritical fluid chromatography-tandem triple quadrupole mass spectrometry. The baseline enantioseparation for prothioconazole and prothioconazole-desthio was achieved within 2 min on a Chiralcel OD-3 column with CO2/0.2% acetic acid-5 mmol/L ammonium acetate 2-propanol (85:15, v/v) as the mobile phase at a flow rate of 1.5 mL/min and column temperature of 25 degrees C. The limit of quantitation for each enantiomer was 5 mu g/kg, with a baseline resolution of >3.0. The results of enantioselective dissipation showed that R-(-)-prothioconazole was preferentially degraded in tomato, cucumber, and pepper under greenhouse conditions. S-(-)-prothioconazole-desthio was preferentially degraded in tomato and cucumber; however, R-(+)-prothioconazole-desthio was preferentially degraded in pepper. Results of this study may help to facilitate more accurate risk assessment of prothioconazole and its major metabolite in agricultural products.

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