ANALYSIS OF METAL-ALLOYS BY INDUCTIVELY COUPLED ARGON PLASMA OPTICAL-EMISSION SPECTROMETRY

A technique for analyzing metal alloys using a direct-reading inductively coupled argon plasma (ICAP) spectrometer is described In which samples are acid-dissolved before analysis. Because a concentration ratio method is used for analysis, dilution errors of up to ±40 % can be tolerated without significant loss of accuracy. The ICAP technique is used to determine 17 elements In irons and steels, 14 elements in copper-based alloys, 12 elements in aluminum alloys. The analytical accuracy of these determinations is verified by the analysis of standard reference materials for each sample matrix. © 1979, American Chemical Society. All rights reserved.