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Sample Weight: 0.5 g per element

Summary

Arsenic and Antimony are determined by Hydride Generation Atomic Absorption Spectrometry (HGAAS). Samples are fused at 750°C with sodium peroxide and the fusion cake dissolved in a dilute nitric acid. The sample solution is reduced with a sodium borohydride solution to generate a volatile hydride for analysis by atomic absorption spectroscopy.

Method 6 and 7 Reporting Limits
Element Concentration (low) Concentration (high)
As, Arsenic 0.5 ppm 300 ppm
Sb, Antimony 0.5 ppm 300 ppm

Analytical Performance

Data will be deemed acceptable if recovery of Arsenic and Antimony is ±20% at five times the Lower Limit of Determination (LOD) and the calculated Relative Standard Deviation (RSD) of duplicate samples is no greater than 20%.

Project Contact

Jaime Azain
Phone: 303-236-9376
Email: jsazain@usgs.gov
Central Mineral and Environmental Resources Science Center

Mineral Resources Program Science Priority

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