Development, validation, comparison, and implementation of a highly efficient and effective method using magnetic solid-phase extraction with hydrophilic-lipophilic-balanced materials for LC-MS/MS analysis of pesticides in seawater

文献类型： 外文期刊

第一作者： Liu, Zhenzhen

作者： Liu, Zhenzhen;Wang, Xinhong;Qi, Peipei;Wang, Jiao;Wang, Zhiwei;Di, Shanshan;Xu, Hao;Zhao, Huiyu;Wang, Qiang;Wang, Xinquan;Qi, Peipei;Wang, Qiang;Wang, Xinquan;Qi, Peipei;Wang, Jiao;Zhao, Huiyu;Wang, Zhiwei;Di, Shanshan;Xu, Hao;Wang, Qiang;Wang, Xinquan

作者机构：

关键词： Magnetic particle adsorbents; N-vinyl pyrrolidone; Divinyl benzene; Liquid chromatography-tandem mass spectrometry; Pesticides residue analysis; Seawater

期刊名称：SCIENCE OF THE TOTAL ENVIRONMENT （ 影响因子：7.963； 五年影响因子：7.842 ）

ISSN： 0048-9697

年卷期： 2020 年 708 卷

页码：

收录情况： SCI

摘要： To achieve multi-pesticides residue analysis in seawater, hydrophilic-lipophilic-balanced magnetic particles were designed and fabricated by swelling polymerization of divinyl benzene (DVB) and N-vinyl pyrrolidone (NVP) on the surface of Fe3O4@SiO2 magnetic particles. The ratio of DVB to NVP was adjusted to achieve a proper balance in hydrophilicity and lipophilicity. The obtained magnetic particles were systematically characterized by TEM, SEM, FT-IR and vibrating sample magnetization. Based on the optimized magnetic nanoparticles, a sensitive magnetic solid-phase extraction method was developed for the simultaneous pre-concentration and determination of 96-pesticide residues from large-volume seawater samples prior to being detected by liquid chromatography-tandem mass spectrometry. Recoveries of pesticides in spiked seawater samples (0.001, 0.01, 0.1, 1.0 mu g L-1) ranged from 62% to 112% with RSDs less than 21%. The method limits of detection of 96 pesticides ranged from 0.13 to 0.42 ng L-1, the method limits of quantification of 96 pesticides ranged from 1.0 to 10 ng L-1. The method was successfully applied to pesticide residue analysis in water samples from Jiulong River Estuary of China, demonstrating the prospects of this technique as a potential method for the rapid determination of trace levels of multi-pesticide residues in seawater. (C) 2019 Elsevier B.V. All rights reserved.

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