Determination of Mercury Compounds in Water Samples by LiquidChromatography–Inductively Coupled Plasma Mass Spectrometry WithanIn Situ Nebulizer/Vapor Generator
Determination of Mercury Compounds in Water Samples by LiquidChromatography–Inductively Coupled Plasma Mass Spectrometry WithanIn Situ Nebulizer/Vapor Generator
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DOI：
10.1039/a605765i
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发表时间：
1997
影响因子：
3.4
通讯作者：
C. Wan;Chih-Shyue Chen;Shiuh-Jen Jiang
中科院分区：
文献类型：
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作者：
C. Wan;Chih-Shyue Chen;Shiuh-Jen Jiang
本文对冷蒸汽产生系统作为液相色谱-电感耦合等离子体质谱（LC-ICP-MS）样品导入装置进行了初步研究。含离子汞化合物的样品在注入冷蒸汽发生器前进行色谱分离。所研究的种类包括无机汞（Hg II）、甲基汞和乙基汞。具有冷蒸汽发生器的LC-ICP-MS系统的灵敏度、检出限和可重复性与具有传统气动雾化或其他样品导入技术的LC-ICP-MS系统相当或更好。各汞种的检出限在0.03 ~ 0.11 ng ml -1 Hg之间。测定了外海海水参考物质NASS-4和国立中山大学自来水样品中汞化合物的浓度。
A preliminary study of a cold vapor generation system as the sample introduction device for liquid chromatography–inductively coupled plasma mass spectrometry (LC–ICP-MS) is described. Samples containing ionic mercury compounds were subjected to chromatographic separation before injection into the cold vapor generator. The species studied include inorganic mercury (Hg II ), methylmercury and ethylmercury. The sensitivity, detection limits and repeatability of the LC–ICP-MS system with a cold vapor generator were comparable to or better than those for an LC–ICP-MS system with conventional pneumatic nebulization or other sample introduction techniques. The limits of detection for various mercury species were in the range 0.03–0.11 ng ml -1 Hg based on peak height. The concentrations of mercury compounds in open ocean sea-water reference material NASS-4 and a tap water sample collected from National Sun Yat-Sen University were determined.