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The impact of hydrogen and oxygen isotope mass fractionation for different detection methods
|Authors:||Yang Hui; Wang Hua; Ying Qihe; Lin Yu; Tu Linling|
|Author Affiliations:||Primary: |
Chinese Academy of Geological Sciences, Institute of Karst Geology, Guilin, China
|Volume Title:||Yankuang Ceshi Rock and Mineral Analysis|
|Source:||Yankuang Ceshi = Rock and Mineral Analysis, 31(2), p.225-228. Publisher: Dizhi Chubanshe, Beijing, China. ISSN: 0254-5357|
|Note:||In Chinese with English summary. 22 refs.; illus., incl. 5 tables|
|Summary:||Since there are a number of ways to measure hydrogen and oxygen isotopes by mass fractionation, this paper describes a comparison of three detection methods on four different water samples. Two different standards were used to calibrate these results. The results indicate that the Dual-inlet IRMS off-line method has the best reproducibility for the detection of hydrogen isotopes, while the Gasbench II-IRMS online analytical method has poor reproducibility. The Gasbench II-IRMS online analytical method and Dual-inlet IRMS off-line method provide better oxygen isotope composition data precision and reproducibility than the TC/EA-IRMS method. Both international and national standards were used to calibrate the data obtained by TC/EA-IRMS. The maximum absolute deviation of the hydrogen isotopic composition data was 1.13 per mill, and is 0.27 per mill in oxygen isotopic composition data. With a different water sample analysis, the Gasbench II-IRMS online analytical method performed best for oxygen isotopic composition analysis and the TC/EA-IRMS method is best for hydrogen isotopic composition analysis. The results differed with different calibration standards.|
|Subjects:||Calibration; Chemical analysis; D/H; Detection; Deuterium; Geochemistry; Hydrogen; Isotope fractionation; Isotope ratios; Isotopes; Mass spectroscopy; Methods; O-18/O-16; Oxygen; Spectroscopy; Stable isotopes|
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