One-step purification using MWCNTs@chitosan composite adsorbents for effective matrix interference removal in determination of 49 Pesticides in aquatic products

文献类型： 外文期刊

第一作者： Zhou, Ruidong

作者： Zhou, Ruidong;Zhang, Xinyuan;Wen, Yupeng;Huo, Wendi;Mu, Yingchun;Liu, Huan;Zhang, Chaoying;Li, Jincheng;Zhou, Ruidong;Zhang, Xinyuan;Wen, Yupeng;Huo, Wendi;Mu, Yingchun;Liu, Huan;Zhang, Chaoying;Li, Jincheng

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关键词： Pesticides; One-step purification; MWCNTs; HPLC-MS/MS; Analysis of Aquatic products

期刊名称：JOURNAL OF HAZARDOUS MATERIALS （ 影响因子：11.3； 五年影响因子：12.4 ）

ISSN： 0304-3894

年卷期： 2025 年 496 卷

页码：

收录情况： SCI

摘要： Multi-walled carbon nanotubes (MWCNTs) are known for their excellent purification properties in QuEChERSbased pesticide analysis, but their potential release and non-recyclability pose environmental and economic challenges. In this study, a novel strategy is proposed to immobilize MWCNTs with chitosan, forming the MWCNTs@chitosan composite, which enables the recyclability of MWCNTs. This composite was employed in a one-step pressure filtration purification method to simultaneously purify extracts of 49 pesticides from aquatic products. Coupled with HPLC-MS/MS, an optimized QuEChERS method was successfully validated for the determination of 49 pesticides. The MWCNTs@chitosan composite demonstrated excellent clean-up capability, effectively removing interfering substances from crude extracts while maintaining recoveries of 71.2-119.4 % and relative standard deviations (RSDs) below 20.0 %. These results demonstrate the composite's suitability as a QuEChERS cleanup material, with potential applications in other complex matrices.

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