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Sample Weight: 1.0 g per method

Summary

Total Sulfur and Total Carbon are determined in geologic materials by combustion followed by infrared detection on LECO instrumentation. A weighed sample is mixed with an accelerator and heated via an induction furnace to oxidize sulfur to sulfur dioxide and carbon to CO2. Moisture and dust are removed and the sulfur dioxide gas and carbon dioxide gas is then measured by a solid state infrared detector.

The reporting limit range for Total Sulfur is from 0.01% to 100%. The reporting limit for Total Carbon is 0.01% to 30%.

Analytical Performance

Data will be deemed acceptable if recovery of Total Sulfur and Total Carbon is ±15% at five times the Lower Limit of Determination (LOD) and the calculated Relative Standard Deviation (RSD) of duplicate samples is no greater than 15%.

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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