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Applying the silver‐tube introduction method for thermal conversion elemental analyses and a new δ 2 H value for NBS 22 oil
Author(s) -
Coplen Tyler B.,
Qi Haiping
Publication year - 2010
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/rcm.4638
Subject(s) - chemistry , fractionation , tube (container) , hydrogen , analytical chemistry (journal) , hydrogen isotope , elemental analysis , evaporation , thermal , nuclear chemistry , radiochemistry , chromatography , inorganic chemistry , waste management , thermodynamics , organic chemistry , physics , engineering
The δ 2 H VSMOW–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 δ 2 H VSMOW–SLAP of NBS 22 oil, calibrated with isotopic reference waters, was determined to be −116.9 ± 0.8‰ (1 σ and n = 31). Published in 2010 by John Wiley & Sons, Ltd.