Development of a specific and sensitive method for the detection of glyphosate pesticide and its metabolite in tea using dummy molecularly imprinte d solid-phase extraction couple d with liquid chromatography-tandem quadrupole mass spectrometry

文献类型： 外文期刊

第一作者： Wang, Qian

作者： Wang, Qian;Wang, Miao;She, Yongxin;Wang, Jing;Zheng, Lufei;Wang, Qian;Wang, Miao;She, Yongxin;Wang, Jing;Zheng, Lufei;Wang, Qian;Jia, Minghong;Abd El-Aty, A. M.;Abd El-Aty, A. M.;Abd El-Aty, A. M.

作者机构：

关键词： Glyphosate; (Aminomethyl)phosphonic acid; Molecularly imprinted polymer; LC; MS; Tea

期刊名称：JOURNAL OF CHROMATOGRAPHY A （ 影响因子：4.1； 五年影响因子：3.7 ）

ISSN： 0021-9673

年卷期： 2023 年 1705 卷

页码：

收录情况： SCI

摘要： Glyphosate, a widely used herbicide, and its primary metabolite aminomethyl phosphonic acid have been found to cause environmental and ecological issues and threaten human health. The conventional pretreatment method was insufficient for the extraction, concentration, and enrichment of trace substances, resulting in poor specificity. Thus, our objective was to develop a method for glyphosate pesticide detection using dummy molecularly imprinted solid-phase extraction (DMI-SPE) combined with liquid chromatography-tandem quadrupole mass spectrometry (DMI-SPE-LC/MS/MS). The sol-gel method was used to prepare the molecularly imprinted material, using glyphosine as the dummy template molecule, to achieve specific adsorption to glyphosate and reduce costs. The optimized polymerization conditions achieved maximum adsorption of 28.6 & mu;g/mg glyphosate by the molecularly imprinted material. The established DMI-SPE-LC/MS/MS method was used to detect glyphosate and its metabolite (aminomethyl)phosphonic acid in tea. The concentration ranges of glyphosate and (aminomethyl)phosphonic acid (from 0.05 to 4 & mu;g/mL) were linear with correlation coefficients of 0.999 and 0.991, respectively. The recoveries of (aminomethyl)phosphonic acid at three spiked levels ranged from 79.95% to 83.74%, with RSDs between 6.40% and 7.45%, while the recoveries of glyphosate ranged from 98.69% to 106.26%, with RSDs between 0.91% and 1.18%. Our results demonstrate that the developed DMI-SPE-LC/MS/MS method achieves high sensitivity and specific detection of glyphosate and its metabolite (aminomethyl)phosphonic acid in tea matrices.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序