Magnetic Amino-Modified Multiwalled Carbon Nanotube (MWCNT) Based Magnetic Dispersive Solid-Phase Extraction (m-dSPE) for the Determination of Paralytic Shellfish Toxins in Bivalve Mollusks with Hydrophilic Interaction Liquid Chromatography-Tandem Mass Spectrometry (HILIC-MS/MS)

文献类型： 外文期刊

第一作者： Wang, Xu-Feng

作者： Wang, Xu-Feng;Wang, Qiang;Zhang, Ying-Xia;Zhao, Dong-Hao;Wang, Xu-Feng;Wang, Qiang;Zhang, Ying-Xia;Zhao, Dong-Hao;Zhao, Dong-Hao;Yang, Jin-Lan

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关键词： Amino-modified multiwalled carbon nanotube (MWCNT); hydrophilic interaction liquid chromatography-tandem mass spectrometry (HILIC-MS; MS); magnetic dispersive solid-phase extraction (m-dSPE); paralytic shellfish toxins (PSTs)

期刊名称：ANALYTICAL LETTERS （ 影响因子：2.267； 五年影响因子：1.823 ）

ISSN： 0003-2719

年卷期： 2022 年 55 卷 10 期

页码：

收录情况： SCI

摘要： A sensitive and efficient magnetic amino modified multi-walled carbon nanotubes (m-MWCNT-NH2)-based magnetic dispersive solid-phase extraction (m-dSPE) coupled with hydrophilic interaction liquid chromatography-tandem mass spectrometry (HILIC-MS/MS) strategy is reported for the simultaneous determination of 13 paralytic shellfish toxins (PSTs) in bivalve mollusks. The samples were extracted twice with 1% acetic acid and purified using optimized m-dSPE procedures with Fe3O4 coated MWCNT-NH2 composites as magnetic adsorbents. The adsorbed PSTs on the m-MWCNT-NH2 adsorbents were separated using a Ni-coated neodymium magnet and subsequently eluted with 2 mL water-acetonitrile-acetic acid (80:20:1, v/v/v) and analyzed by HILIC-MS/MS. The correlation coefficients (r) of the targeted toxins obtained in matrix-matched external standard curves were from 0.997 to 0.999. The PSTs were acquired and quantified in the multiple reaction-monitoring mode and the limits of detection and quantitation in bivalve mollusks were 1.10 to 4.51 mu g/kg and 3.67 to 13.5 mu g/kg, respectively. Spiked recoveries at three concentrations in negative samples were from 73.4% to 92.5% with precision less than 10.6%. The method validation was in accordance with 2002/657/EC guidelines and method application in commercial bivalve mollusk samples. The developed method was rapid, convenient and economical for the determination of the targeted toxins.

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