Rapid multi-element analysis of groundwater by high-resolution inductively coupled plasma mass spectrometry
Rapid multi-element analysis of groundwater by high-resolution inductively coupled plasma mass spectrometry
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DOI：
10.1007/s00216-004-2618-x
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发表时间：
2004-06-01
影响因子：
4.3
通讯作者：
van Geen, A
中科院分区：
文献类型：
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作者：
Cheng, Z;Zheng, Y;van Geen, A
开发了一种快速、灵敏的方法，可通过单次稀释测定地下水中 33 种主量元素和痕量元素（Na、Mg、Si、K、Ca、Li、Al、P、S、Ti、V、Cr、Mn、Fe、Co、Ni、Cu、Zn、As、Se、Sr、Mo、Cd、In、Sn、Sb、Cs、Ba、Re、Hg、Pb、Bi、U）的浓度。该方法依赖于高分辨率电感耦合等离子体质谱 (HR ICP-MS)，适用于九个数量级的浓度。对于大多数元素，该方法的检测限远低于基于四极杆 ICP-MS 的方法。除 Se (+/-10%) 和 Al (+/-6%) 外，所有分析元素的精度均在或接近 +/-3% (1sigma)。从孟加拉国（Araiharzar 东北部）管井采集的一组 629 个地下水样本证明了该方法的实用性。结果表明，该地区大多数管井样品的砷含量超过了世界卫生组织10 μg L-1的指导标准，而这些砷安全井经常不符合500 μg L-1的锰含量和2 μg L-1的铀含量指导值。
A rapid and sensitive method was developed to determine, with a single dilution, the concentration of 33 major and trace elements (Na, Mg, Si, K, Ca, Li, Al, P, S, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Se, Sr, Mo, Cd, In, Sn, Sb, Cs, Ba, Re, Hg, Pb, Bi, U) in groundwater. The method relies on high-resolution inductively coupled plasma mass spectrometry (HR ICP-MS) and works across nine orders of magnitude of concentrations. For most elements, detection limits for this method are considerably lower than methods based on quadrupole ICP-MS. Precision was within or close to +/-3% (1sigma) for all elements analyzed, with the exception of Se (+/-10%) and Al (+/-6%). The usefulness of the method is demonstrated with a set of 629 groundwater samples collected from tube wells in Bangladesh (Northeast Araiharzar). The results show that a majority of tube well samples in this area exceed the WHO guideline for As of 10 mug L-1, and that those As-safe wells frequently do not meet the guideline for Mn of 500 mug L-1 and U of 2 mug L-1.