采用非对称流场流分离法（As-Fl-FFF）和电感耦合等离子体质谱法（ICP-MS）对与胶体相关的微量元素进行在线和离线定量分析。
On-line and off-line quantification of trace elements associated to colloids by As-Fl-FFF and ICP-MS.
作者信息
Dubascoux S, Le Hécho I, Potin Gautier M, Lespes G
机构信息
LCABIE CNRS UMR 5254 IPREM, Helioparc, av du Président Pierre Angot, 64053 PAU, France.
出版信息
Talanta. 2008 Oct 19;77(1):60-5. doi: 10.1016/j.talanta.2008.05.050. Epub 2008 Jun 7.
A quantification procedure of trace elements during colloid size fractionation was developed and validated. This procedure is based on the hyphenation between Asymmetrical Flow Field-Flow Fractionation (As-Fl-FFF) and Inductively Coupled Plasma Mass Spectrometer (ICP-MS). The optimisation of the procedure was performed on a soil leachate spiked with six trace elements selected for their environmental and health impact (As, Cd, Sb, Se, Sn and Pb). The elements in the spiked sample were on-line monitored during the fractionation. The validation was carried out by comparison with a second off-line quantification procedure based on fraction collection and total element analysis by ICP-MS. This off-line one was previously validated using reference materials. Finally, the analytical performances of the two procedures were compared.
开发并验证了一种在胶体尺寸分级过程中对微量元素进行定量的方法。该方法基于非对称流场-流分级法（As-Fl-FFF）与电感耦合等离子体质谱仪（ICP-MS）的联用。该方法的优化是在添加了六种因其对环境和健康有影响而被选定的微量元素（砷、镉、锑、硒、锡和铅）的土壤浸出液上进行的。在分级过程中对加标样品中的元素进行在线监测。通过与基于分级收集和ICP-MS全元素分析的第二种离线定量方法进行比较来进行验证。这种离线方法先前已使用参考物质进行了验证。最后，比较了这两种方法的分析性能。
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