Stereoselective Analysis and Dissipation of Propiconazole in Wheat, Grapes, and Soil by Supercritical Fluid Chromatography-Tandem Mass Spectrometry
文献类型： 外文期刊
作者： Cheng, Youpu 2 ; Zheng, Yongquan 1 ; Dong, Fengshou 1 ; Li, Jing 3 ; Zhang, Yaofang 2 ; Sun, Shuhong 2 ; Li, Ning 2 ; Cui 1 ;
作者机构： 1.Chinese Acad Agr Sci, Inst Plant Protect, State Key Lab Biol Plant Dis & Insect Pests, Beijing, Peoples R China
2.Tianjin Agr Univ, Tianjin, Peoples R China
3.Tianjin Acad Agr Sci, Inst Qual Stand & Testing Technol Agroprod, Tianjin, Peoples R China
关键词： propiconazole;stereoselective analysis;SFC-MS/MS;wheat;grapes
期刊名称：JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY （ 影响因子：5.279； 五年影响因子：5.269 ）
ISSN：
年卷期：
页码：
收录情况： SCI
摘要： An efficient and sensitive chiral analytical method was established for the determination of propiconazole stereoisomers by supercritical fluid chromatography-tandem mass spectrometry (SFC-MS/MS). Stereoisomeric separation was performed on a Chiralpak AD-3 column with CO2/ethanol (93:7) as the mobile phase. The four propiconazole stereoisomers were well separated in 4.7 min with resolutions above 2.0. The specificity, linearity, matrix effects, accuracy, precision, and stability of the developed method were evaluated. The stereoselective dissipation of propiconazole in wheat straw, grape, and soil samples was investigated according to the proposed method. The results indicated that significant stereoselective degradation occurred in wheat straw and grapes, with preferential degradation of (-)-propiconazole A and (+)-propiconazole B in wheat straw and the opposite case in grapes. No enantioselectivity was observed in soil, although diastereoisomer A degraded more rapidly than diastereoisomer B. These results could contribute to a more accurate assessment of the environmental risk and food safety of propiconazole.
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