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首页> 外文期刊>Electrophoresis: The Official Journal of the International Electrophoresis Society >Capillary electrophoresis with inductively coupled plasma-mass spectrometric and electrospray time of flight mass spectrometric detection for the determination of arsenic species in fish samples.
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Capillary electrophoresis with inductively coupled plasma-mass spectrometric and electrospray time of flight mass spectrometric detection for the determination of arsenic species in fish samples.

机译：毛细管电泳-电感耦合等离子体质谱法和电喷雾飞行时间质谱法检测鱼样品中的砷。

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摘要

CE was coupled to inductively coupled plasma MS (ICP-MS) and ESI-MS to identify and quantify the arsenic species arsenobetaine (AsB), arsenite (As(III)), arsenate (As(V)), and dimethylarsinic acid (DMA). A GC-flame ionization detector (FID)-based German standard method and ICP-MS were used for validation of the data obtained for arsenobetaine and total arsenic, respectively. LODs obtained with the CE-ESI-TOF-MS method were 1.0x10(-7) M for AsB, 5.0x10(-7) M for DMA, and 1.0x10(-6) M for As(III) and As(V). For the CE-ICP-MS method, LODs were 8.5x10(-8) M for AsB, 9.5x10(-8) M for DMA, 9.3x10(-8) M for As(III), and 6.2x10(-8) M for As(V). While CE-ICP-MS provided high sensitivity and better reproducibility for quantitative measurements, CE-ESI-MS with a TOF mass analyzer proved to be valuable for species identification. With this setup, fish samples were prepared and analyzed and the obtained data were successfully validated with the independent methods.
机译：CE与电感耦合等离子体质谱仪（ICP-MS）和ESI-MS偶联以鉴定和定量砷中的砷物种甜菜碱（AsB），亚砷酸盐（As（III）），砷酸盐（As（V））和二甲基砷酸（DMA） ）。使用基于GC火焰离子化检测器（FID）的德国标准方法和ICP-MS分别验证了砷甜菜碱和总砷的数据。使用CE-ESI-TOF-MS方法获得的LOD对于AsB为1.0x10（-7）M，对于DMA为5.0x10（-7）M，对于As（III）和As（V）为1.0x10（-6）M ）。对于CE-ICP-MS方法，对于AsB，LOD为8.5x10（-8）M，对于DMA为9.5x10（-8）M，对于As（III）为9.3x10（-8）M，以及6.2x10（-8） ）M表示As（V）。尽管CE-ICP-MS为定量测量提供了高灵敏度和更好的重现性，但具有TOF质量分析仪的CE-ESI-MS被证明对物种鉴定非常有价值。通过这种设置，准备并分析了鱼类样品，并使用独立的方法成功验证了获得的数据。

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