Speciation of organomercury compounds by capillary electrophoresis with pre-column derivatization and on-line stacking

论文摘要

Simultaneous separation and detection of three organomercury species, namely methylmercury（MeHg）,ethylmercury（EtHg）, and phenylmercury（PhHg）, was performed by using capillary electrophoresis（CE）with UV detection. Pre-column derivatization with thiosalicylic acid and on-line salt-induced stacking significantly improved the detection performance. Buffer pH, ion strength, and additive were optimized for CE separation, concentration of NaCl in sample solution and injection time were optimized for on-line stacking. The limits of detection were 76.9,83.0 and 76.4 μg/L for PhHg, EtHg and MeHg, respectively. The developed method was validated by certified reference material and liquid chromatography-atomic fluorescence spectroscopy, which suggests this method could be useful in the speciation of organomercury compounds in biological samples.

论文目录

文章来源

类型: 期刊论文

作者: Dandan Cao,Yongguang Yin,Bin He

来源: Chinese Chemical Letters 2019年03期

年度: 2019

分类: 工程科技Ⅰ辑

专业: 化学

单位: State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences,University of Chinese Academy of Sciences

基金: the National Natural Science Foundation of China (No. 21777178)for financial support

分类号: O658.9

页码: 650-652

总页数: 3

文件大小: 459K

下载量: 5

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