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Determination of the δ34S of sulfate in water; RSIL lab code 1951

Dates

Year
2006

Citation

Revesz, Kinga, Qi, Haiping, and Coplen, Tyler B, 2006, Determination of the δ34S of sulfate in water; RSIL lab code 1951: U.S. Geological Survey.

Summary

The purpose of the Reston Stable Isotope Laboratory (RSIL) lab code 1951 is to determine the δ(34S/32S), abbreviated as δ34S, of dissolved sulfate. Dissolved sulfate is collected in the field and precipitated with BaCl2 at pH 3 to 4 as BaSO4 in the laboratory. However, the dissolved organic sulfur (DOS) is oxidized to SO2, and the carbonate is acidified to CO2. Both are degassed from the water sample before the sulfate is precipitated. The precipitated BaSO4 is filtered and dried before introduction into an elemental analyzer (EA) Carlo Erba NC 2500. The EA is used to convert sulfur in a BaSO4 solid sample into SO2 gas, and the EA is connected to a continuous flow isotope-ratio mass spectrometer (CF-IRMS), which determines the differences [...]

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  • USGS National Research Program

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Added to ScienceBase on Fri Apr 19 12:45:35 MDT 2013 by processing file <b>Physical Chemistry of Stable Isotope Fractionation in Hydrologic Processes.xml</b> in item <a href="https://www.sciencebase.gov/catalog/item/504216bae4b04b508bfd337f">https://www.sciencebase.gov/catalog/item/504216bae4b04b508bfd337f</a>

Additional Information

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Report Number http://sciencebase.gov/vocab/identifierScheme TM - 10-C10

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