Research on Gas Reference Material of C4F7N in Carbon Dioxide
WANG De-fa1,ZHANG Ti-qiang1,HAN Qiao1,LIU Zhi-yong1,WANG Yan-wu2,YAN Xiang-lian3
1. National Institute of Metrology, Beijing 100029, China
2. Henan Relations Co. Ltd., Zhengzhou, Henan 450001, China
3. China Electric Power Research Institute, Beijing 100192, China
Abstract：Research on gas reference material of C4F7N in carbon dioxide was reported. The gas mixture was prepared by filling pure C4F7N and carbon dioxide into cylinder. The certified value was from gravimetric method. The impurities in parent gas were determined. The long-term stability of this reference material was evaluated by both classical stability study and isochronous stability study. Results showed it had good stability in six month. The relative expanded uncertainty is 0.5% (k=2) for the mole fraction from 1% mol/mol to 30% mol/mol.
王德发,张体强,韩桥,刘智勇,王彦武,颜湘莲. 二氧化碳中全氟异丁腈气体标准物质的研制[J]. 计量学报, 2021, 42(1): 123-128.
WANG De-fa,ZHANG Ti-qiang,HAN Qiao,LIU Zhi-yong,WANG Yan-wu,YAN Xiang-lian. Research on Gas Reference Material of C4F7N in Carbon Dioxide. Acta Metrologica Sinica, 2021, 42(1): 123-128.
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2021, Vol. 42 
