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Sample Weight: 0.5 g

Summary

Selenium is determined by Hydride Generation Atomic Absorption Spectrometry (HGAAS). The sample is digested in a Teflon vessel with hot hydrochloric, nitric, hydrofluoric and perchloric acids. The sample solution is reduced with a sodium borohydride solution to generate a volatile hydride for analysis.

The reporting limit range for Selenium is 0.5 ppm to 300 ppm.

Analytical Performance

Data will be deemed acceptable if recovery of Selenium 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

The use of firm, trade, and brand names is for identification purposes only and does not constitute endorsement by the U.S. government.

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