期刊
ANALYTICAL CHEMISTRY
卷 92, 期 3, 页码 2383-2387出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.analchem.9b04737
关键词
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资金
- DAAD (German Academic Exchange Service) from German Federal Ministry of Education and Research (BMBF) [57315688]
- Natural Sciences and Engineering Research Council (NSERC)
There is a strong need for careful quality control in hydrogen compound-specific stable isotope analysis (CSIA) of halogenated compounds. This arises in part due to the lack of universal design of the chromium (Cr) reactors. In this study, factors that optimize the critical performance parameter, linearity, for the Cr reduction method for hydrogen isotope analysis were identified and evaluated. These include the effects of short and long vertically mounted reactors and temperature profiles on trapping of Cl to ensure accurate and precise hydrogen isotope measurements. This paper demonstrates the critical parameters that need consideration to optimize any Cr reactor applications to ensure the accuracy of delta H-2 analysis for organic compounds and to enhance intercomparability for both international standards and reference materials run by continuous flow versus an elemental analyzer.
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