DETERMINATION OF SELECTED ELEMENTS IN WHOLE COAL AND IN COAL ASH FROM THE , ARGONNE PREMIUM COAL SAMPLES BY ATOMIC-ABSORPTION SPECTROMETRY, ATOMIC EMISSION-SPECTROMETRY, AND ION-SELECTIVE ELECTRODE

Methods for the determination of 24 elements in whole coal and coal ash by inductively coupled argon plasma-atomic emission spectrometry, flame, graphite furnace, and cold vapor atomic absorption spectrometry, and by ion-selective electrode are described. Coal ashes were analyzed in triplicate to determine the precision of the methods. Results of the analyses of NBS Standard Reference Materials 1633, 1633a, 1632a, and 1635 are reported. Accuracy of the methods is determined by comparison of the analysis of standard reference materials to their certified values as well as other values in the literature. © 1990, American Chemical Society. All rights reserved.