- P-ISSN 1225-0163
- E-ISSN 2288-8985
In this study, a new method for the analysis of high-purity nitrogen was developed. A gas chromatography-flame ionization detector (GC-FID) was used for purity analysis. Certified reference materials (CRMs) at a level of 3 μmol/mol of carbon monoxide (CO), carbon dioxide (CO2), and methane (CH4), which may exist in high-purity nitrogen, were prepared using the gravimetric method, and these CRMs were used for purity analysis. In this new method, ultra-high-purity and high-purity nitrogen were used as carrier gases. The impurities in high-purity nitrogen were quantitatively analyzed by comparing the differences in the area values of the GC chromatograms of the prepared CRMs. We purchased liquid nitrogen and three bottles of nitrogen gas, which were produced by three different manufacturers, using high-purity nitrogen. Furthermore, to validate the developed purity analysis method, the fraction of impurities in high-purity nitrogen was compared with the results of the typical purity analysis method. The comparison results were consistent within the expanded uncertainties (k = 2).
1. Y. W. You, D. G. Lee, K. Y. Yoon, D. K. Moon, S. M. Kim, and C. H. Lee, International Journal of Hydrogen Energy, 37(23), 18175-18186 (2012).
2. International Organization for Standardization, ISO 19229:2015 Gas analysis – Purity analysis and the treatment of purity data, Geneva, 2015.
3. P. Coning and J. Swinley, In ‘A Practical Guide to Gas Analysis by Gas Chromatography’, p 45-75, Elsevier Inc., Amasterdam, 2019.
4. W. Jennings, E. Mittlefehldt, and S. Phillip, ‘Analytical gas chromatography’, 2nd Ed. Academic Press, 1997.
5. O. Zuas and M. R. Mulyana, French-Ukrainian Journal of Chemistry, 5(1), 35-47 (2017).
6. P. S. Yong and H. M. Moon, Journal of Industrial and Engineering Chemistry, 8(6), 499-505 (2002).
7. M. R. Mulyana, H. Budiman, O. Zuas, and A. Hindayani, Journal of Physics, 1153(1), 012035 (2019).
8. P. Coning and J. Swinley, ‘A Practical Guide to Gas Analysis by Gas Chromatography’, Elsevier Inc., Amasterdam, 2019.
9. G. Castello and G. D’Amato, Journal of Chromatography A, 32, 625-634 (1968).
10. International Organization for Standardization, ISO 17034:2016 General requirements for the competence of reference material producers, Geneva, 2016.
11. International Organization for Standardization, ISO 6142-1:2015 Gas analysis - Preparation of calibration gas mixtures – Part 1: Gravimetric method for Class I mixtures, Geneva, 2015.
12. M. J. T. Milton, G. M. Vargha, and A. S. Brown, Metrologia, 48, R1-R9 (2011).
13. J. E. Kim, J. B. Lee, J. S. Kim, I. Yang, and K. Hong, Metrologia, 59, 055003 (2022).
14. S. H. Oh, B. M. Kim, and N. Kang, Metrologia, 50(4), 318-324 (2013).
15. N. Matsumoto, T. Watanabe, M. Maruyama, Y. Horimoto, T. Maeda, and K. Kato, Metrologia, 41, 178-188 (2004).
16. B. S. Ahn, D. M. Moon, J. B. Lee, J. S. Kim, J. H. Lee, and K. Hong, Analytical Science and Technology, 33(2), 68-75 (2020).
17. M. J. T. Milton, F. Guenther, W. R. Miller, and A. S. Brown, Metrologia, 43, L7- L10 (2006).