Abstract
Some characteristics for the analysis of non-conducting powders by direct current glow discharge atomic emission spectroscopy (dc-GD-AES) were investigated. Copper powder was chosen as a suitable host conducting material for the analysis of mixtures of rare earth oxides. The influences of sample preparation and discharge parameters on the sputtering rate, discharge stability and emission intensity of the analyte were investigated systematically. The sample-to-sample reproducibility was discussed, and the average RSDs were in the range from 4% to 5%. The proposed method was applied to the analysis of a mixture of rare earth oxides and the results obtained were in good agreement with those obtained by ICP-AES.
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