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Measurement Technology of Noble Gas Isotopes in Natural Gases
Author(s): 
Pages: 271-275
Year: Issue:  2
Journal: ACTA SEDIMENTOLOGICA SINICA

Keyword:  天然气稀有气体同位素分析技术;
Abstract: A high vacuum purification line with lower leakage and lower background level h ad been established. The contamination of atmospheric argon to the samples was eliminated. The author determined the 40Ar/36Ar ratios of th e samples analyzed previously using new method. Precise 40Ar/36Ar rat io is obtained by this system. The 40Ar/36Ar ratio obser ved by the new met hod is significantly higher than the previously determined ones, and the discrepanc y was related to the Ar content of nature gas. Separating Ar from Kr and Xe is basically successful by temperature-modulated cold finger, Kr and Xe isotopic compositions then can be measured.
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