Spectrographic Analysis of Fire Assay Beads for the Platinum Group Metals and Gold
- 1 January 1974
- journal article
- research article
- Published by SAGE Publications in Applied Spectroscopy
- Vol. 28 (1) , 23-25
- https://doi.org/10.1366/000370274774333000
Abstract
By arcing a 10-mg fire assay bead at 7 A on a Cu cathode, bead ejection is avoided without buffering. Sensitivities for the precious metals are in the range 0.01 to 0.5 µg and precisions between 8 and 18%. The technique is suitable for rapid screening of fire assay beads for the precious metals.Keywords
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