Enantioselective separation and determination of the dinotefuran enantiomers in rice, tomato and apple by HPLC

文献类型： 外文期刊

第一作者： Dong, Fengshou

作者： Dong, Fengshou;Liu, Xingang;Xu, Jun;Li, Jing;Li, Yuanbo;Zheng, Yongquan;Wang, Yunhao

作者机构：

关键词： Chiral pesticides;Dinotefuran;Enantioseparation;Food;Residue

期刊名称：JOURNAL OF SEPARATION SCIENCE （ 影响因子：3.645； 五年影响因子：2.943 ）

ISSN：

年卷期：

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收录情况： SCI

摘要： An effective chiral analytical method was developed for the resolution and determination of dinotefuran enantiomers in rice, tomato and apple samples. Dinotefuran enantiomers were baseline-separated and determined on a novel chiral column, ChromegaChiral CCA, with n-hexane-ethanol-methanol (85:5:10, v/v/v) as the mobile phase at a flow rate of 1.0mL/min with UV detection at 270nm. The resolution of dinotefuran enantiomers was about 1.8. The first eluted enantiomer was (+)-dinotefuran and the second eluted one was (-)-dinotefuran. The effects of mobile-phase composition and column temperature on the enantioseparation were evaluated. The method was validated for linearity, repeatability, accuracy, LOD and LOQ. LOD was 0.15g/kg in rice and tomato, 0.05g/kg in apple, with an LOQ of 0.5amg/kg in rice and tomato, 0.2mg/kg in apple. The average recoveries of the pesticide from all matrices ranged from 75.8 to 92.9% for all fortification levels The precision values associated with the analytical method, expressed as RSD values, were <16.5% for the pesticide in all matrices. The methodology was successfully applied for the enantioselective analysis of dinotefuran enantiomers in real samples, indicating its efficiency in investigating the environmental stereochemistry of dinotefuran in food matrix.

分类号： O6

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