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首页> 外文期刊>RSC Advances >Stereoselective analysis of the chiral fungicide penflufen in wheat plants, spinach, and Chinese cabbage
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Stereoselective analysis of the chiral fungicide penflufen in wheat plants, spinach, and Chinese cabbage

机译：小麦，菠菜和大白菜中手性杀菌剂喷氟芬的立体选择性分析

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Penflufen is a highly efficient, broad-spectrum succinate dehydrogenase inhibitor. Owing to the increasing pesticide resistance in recent years, the use of a new fungicide, penflufen, has become increasingly widespread. However, residues that remain in the environment after the use of penflufen have an impact on human health. It is worth noting that penflufen is a chiral pesticide. The differences of residue behaviors between two enantiomers in living organisms need to be systematically studied. In this paper, reversed-phase liquid chromatography-mass spectrometry (LC-MS) was used to separate the enantiomers of penflufen, and the absolute configuration of the enantiomer was analyzed. The LC-MS/MS methods for the analysis of penflufen enantiomers on wheat plants, spinach, and Chinese cabbage were established. The results of the recovery experiments showed that the average recovery of the two enantiomers was 78.5–99.8% and RSD was 0.4–7.3%, suggesting that the accuracy and precision of the method meet the requirements of pesticide residue analysis. The results of stereoselective degradation of penflufen in the three matrices showed that there was little difference in the degradation of the two enantiomers in wheat and cabbage, while R -(+)-penflufen was degraded preferentially in spinach. This study provides data supporting the scientific use and safety evaluation of penflufen.
机译：Penflufen是高效的广谱琥珀酸脱氢酶抑制剂。由于近年来对杀虫剂的抗药性增强，新型杀真菌剂彭氟芬的使用已变得越来越普遍。但是，使用喷氟芬后残留在环境中的残留物会影响人体健康。值得注意的是，喷氟芬是一种手性农药。有系统地研究两种对映异构体在生物体内的残留行为差异。本文采用反相液相色谱-质谱法（LC-MS）分离喷氟芬的对映体，并分析了该对映体的绝对构型。建立了用于分析小麦，菠菜和大白菜中喷氟芬对映体的LC-MS / MS方法。回收率实验的结果表明，两种对映异构体的平均回收率为78.5–99.8％，RSD为0.4–7.3％，这表明该方法的准确性和精密度符合农药残留分析的要求。在三种基质中苯氟芬的立体选择性降解结果表明，小麦和甘蓝中两种对映体的降解几乎没有差异，而R-（+）-苯氟芬在菠菜中优先降解。该研究提供的数据支持戊氟芬的科学使用和安全性评估。

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