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- Title
甲烷中四氢噻吩标准气体定值方法研究.
- Authors
蔡黎; 秦吉; 沈琳; 李晓红; 周理
- Abstract
Tetrahydrothiophene in methane reference gas is the metrological foundation of natural gas odour analysis. Tetrahydrothiophene in methane reference gas is prepared by mass comparator with 0.1 mg sensitivity using gravimetric method. Because of the interaction between tetrahydrothiophene and the inner-side of the cylinder, the actual tetrahydrothiophene concentration and the result of gravimetric data exhibit some differences. Another method use manometric method to prepare reference gas and determine the concentration by total sulfur comparison. Because of the dynamic balance between tetrahydrothiophene and the cylinder, the determined concentration of tetrahydrothiophene has an uncertainty acceptable difference with the comparative result. The second method is more statistically accurate.
- Publication
Chemical Engineering of Oil & Gas / Shi You Yu Tian Ran Qi Hua Gong, 2017, Vol 46, Issue 1, p95
- ISSN
1007-3426
- Publication type
Article
- DOI
10.3969/j.issn.1007-3426.2017.01.019