Minimization of sample volume with air-segmented sample injection and the simultaneous determination of trace elements by ICP-MS
Minimization of sample volume with air-segmented sample injection and the simultaneous determination of trace elements by ICP-MS
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DOI：
10.2116/analsci.24.631
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发表时间：
2008-05-01
影响因子：
1.6
通讯作者：
Motomizu, Shoji
中科院分区：
文献类型：
--
作者：
Noguchi, Osamu;Oshima, Mitsuko;Motomizu, Shoji
研究了电感耦合等离子体质谱（ICP-MS）在法医化学中的应用。所开发的方法，空气分段进样（ASSI）耦合ICP-MS，允许测定约25个元素在亚ppb水平，只有0.2毫升的样品溶液。最佳进样流速为0.4 ml min（-1），沿着，进样时间为30 s。用加拿大国家研究理事会标准物质SLRS-4测定河水中的微量元素，验证了方法的有效性。该方法的分析结果与标准值吻合较好。该方法成功地应用于人发样品，其体积为3毫升。
The application of inductively coupled plasma mass spectrometry (ICP-MS) to forensic chemistry was studied. The developed method, air-segmented sample injection (ASSI) coupled with ICP-MS, allowed the determination of about 25 elements at the sub-ppb level with only 0.2 ml of a sample solution. The optimum sample flow rate was found to be 0.4 ml min(-1), along with a sample suction time of 30 s. The proposed method was validated by determining trace elements in river-water certified reference material (SLRS-4) issued by National Research Council Canada. The analytical results of the proposed method were in good agreement with the certified values. This method was successfully applied to a human hair sample, the volume of which was 3 ml.