Skip to main content
U.S. flag

An official website of the United States government

Applying the silver-tube introduction method for thermal conversion elemental analyses and a new δ2H value for NBS 22 oil

January 1, 2010

The δ2HVSMOW–SLAP value of total hydrogen of the international measurement standard NBS 22 oil was determined by a new method of sealing water in silver tubes for use in a thermal conversion elemental analysis (TC/EA) reduction unit. The isotopic fractionation of water due to evaporation is virtually non-existent in this silver-tube method. A new value for the δ2HVSMOW–SLAP of NBS 22 oil, calibrated with isotopic reference waters, was determined to be −116.9 ± 0.8‰ (1σ and n = 31).

Publication Year 2010
Title Applying the silver-tube introduction method for thermal conversion elemental analyses and a new δ2H value for NBS 22 oil
DOI 10.1002/rcm.4638
Authors Tyler B. Coplen, Haiping Qi
Publication Type Article
Publication Subtype Journal Article
Series Title Rapid Communications in Mass Spectrometry
Index ID 70037237
Record Source USGS Publications Warehouse