等离子发射光谱在环境中的应用 英文

The ability of the ICP/AES (inductively coupled plasma/ atomic emission spectroscopy) system to perform multielement trace metal analysis of environmental samples provided commercial laboratories with the needed incentive to enter into the business of trace metal analysis. Previously, trace metals were typically analyzed using colorimetric techniques, which were both cumbersome and subject to interferences, or flame atomic absorption techniques, which although almost interference free, were labor intensive owing to their one element at a time analytical mode. Even the furnace atomic absorption technique, for years the standard bearer of low-level trace metal analysis, is giving way to axial viewed ICP/AES techniques. Taking the USEPA (United States Environmental Protection Agency) SW-846 solid waste analysis manual as an example, this article reviews the methods used for the preparation of samples and the ICP/AES analysis of the prepared samples for trace metals in environmental matrices. The review includes a detailed overview of the quality control (QC) requirements for environmental ICP/AES analysis.