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New Chinese National Reference Materials for Hydrogen and Oxygen Isotopes in Water
Author(s) -
Zhang Lin,
Liu Fuliang,
Jia Yankun,
Zhang Xiangyang
Publication year - 2013
Publication title -
geostandards and geoanalytical research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.037
H-Index - 73
eISSN - 1751-908X
pISSN - 1639-4488
DOI - 10.1111/j.1751-908x.2012.00196.x
Subject(s) - certified reference materials , calibration , analytical chemistry (journal) , reference values , spectroscopy , isotope , hydrogen , reference data , chemistry , environmental chemistry , physics , mathematics , computer science , chromatography , statistics , database , nuclear physics , organic chemistry , medicine , quantum mechanics , detection limit
The I nstitute of H ydrogeology and E nvironmental G eology, C hinese A cademy of Geological Sciences recently prepared four certified reference materials for hydrogen and oxygen stable isotopes in water, which are called ‘ C hina S tandard W ater' ( CSW )‐ H O1– HO 4 (hereafter referred to as HO 1– HO 4). These reference materials are intended for calibration purposes and provide reference values of their relative difference in 2 H / 1 H and 18 O / 16 O isotope‐amount ratios expressed in delta notation, normalised to the VSMOW – SLAP scale. The certified values of the reference materials were determined by an interlaboratory comparison of results from eleven participating laboratories. This paper describes in detail the production and certification procedure of the four reference materials. The first analytical data for the reference materials are also provided using a variety of analytical techniques, namely CO 2 – H 2 O equilibration and laser spectroscopy for δ 18 O and Cr reduction, as well as H 2 –H 2 O equilibration, laser spectroscopy, and high‐temperature conversion for δ 2 H . The reference values for materials HO 1– HO 4 and their associated uncertainties are assigned.