High-throughput multipesticides residue analysis in earthworms by the improvement of purification method: Development and application of magnetic Fe3O4-SiO2 nanoparticles based dispersive solid-phase extraction

文献类型： 外文期刊

第一作者： Sun, Yuhan

作者： Sun, Yuhan;Yang, Xuewei;Wang, Lidong;Zhao, Changshan;Qi, Peipei;Cang, Tao;Wang, Zhiwei;Wang, Xiangyun;Xu, Xiahong;Wang, Qiang;Wang, Xinquan;Qi, Peipei;Cang, Tao;Wang, Zhiwei;Wang, Xiangyun;Xu, Xiahong;Wang, Qiang;Wang, Xinquan;Qi, Peipei;Cang, Tao;Wang, Zhiwei;Wang, Xiangyun;Xu, Xiahong;Wang, Qiang;Wang, Xinquan

作者机构：

关键词： earthworms; dispersive solid-phase extraction; magnetic nanoparticles; multipesticides residue; liquid chromatography tandem mass spectrometry

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

ISSN： 1615-9306

年卷期： 2018 年 41 卷 11 期

页码：

收录情况： SCI

摘要： As a key representative organism, earthworms can directly illustrate the influence of pesticides on environmental organisms in soil ecosystems. The present work aimed to develop a high-throughput multipesticides residue analytical method for earthworms using solid-liquid extraction with acetonitrile as the solvent and magnetic material-based dispersive solid-phase extraction for purification. Magnetic Fe3O4 nanoparticles were modified with a thin silica layer to form Fe3O4-SiO2 nanoparticles, which were fully characterized by field-emission scanning electron microscopy, transmission electron microscopy, Fourier-transform infrared spectroscopy, X-ray diffractometry, and vibrating sample magnetometry. The Fe3O4-SiO2 nanoparticles were used as the separation media in dispersive solid-phase extraction with primary secondary amine and ZrO2 as the cleanup adsorbents to eliminate matrix interferences. The amounts of nanoparticles and adsorbents were optimized for the simultaneous determination of 44 pesticides and six metabolites in earthworms by liquid chromatography with tandem mass spectrometry. The method performance was systematically validated with satisfactory results. The limits of quantification were 20 mu g/kg for all analytes studied, while the recoveries of the target analytes ranged from 65.1 to 127% with relative standard deviation values lower than 15.0%. The developed method was subsequently utilized to explore the bioaccumulation of bitertanol in earthworms exposed to contaminated soil, verifying its feasibility for real sample analysis.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序