Abstract
The hollow cathode plume (HCP) was applied to the elemental analysis of geological materials by atomic emission. Graphite, silver, and copper were studied as matrix materials to produce conducting electrodes from geological/matrix mixtures. Data taken from a range of sample-to-matrix ratios showed that a 10% sample composition was optimum. Reproducibility of HCP data was approximately 5%. Simulated analyses of NBS geological samples were undertaken by the developed procedures.
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