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129th General Meeting of Korean Chemical Society & Exposition Quantitative analysis of hydrogen isotopes in deuterium and hydrogen gases

Submission Date :
2 / 25 / 2022 , 13 : 28 : 57
Abstract Number :
Presenting Type:
Oral Presentation
Presenting Area :
Analytical Chemistry - Oral Presentation of Young Analytical Chemists II
Authors :
Jin Woo Chang, Jeong Eun Kim1, Jin seog Kim*
Gas Isotope Metrology team, Korea Research Institute of Standards and Science, Korea
1Thermodynamic Temperature team, Korea Research Institute of Standards and Science, Korea
Assigned Code :
ANAL2.O-19 Assigend Code Guideline
Presenting Time :
FRI, 10 : 12
Stable isotopes of hydrogen include H and deuterium atom (D), and molecules include H2 (Hydrogen), HD (Hydrogen Deuteride), and D2 (deuterium). Recently, deuterium has been used instead of hydrogen in industries such as electronics and semiconductors. The diffusion velocity of deuterium is slower than ordinary hydrogen and can improve the stability of the industrial processes of products. Korea exploits more than half of the world market of deuterium and it all relies on import due to lack of industrial facilities to produce suitable deuterium. Many Korean companies are building deuterium production facilities to produce high-purity deuterium. The D2 is produced by electrolysis of deuterium water (D2O), the isotopes H2 and HD exist as impurities with the deuterium gas produced in this process. Without regulation impurities affect the purity of deuterium gas and only high purity gas is required for industrial use. Therefore, determining impurities of D2 is crucial. In this study, three high purity gases, H2, D2 and HD were used to analyze trace amounts of hydrogen isotopes using Precision Gas Mass Spectrometer (MAT271). Hydrogen isotopes present in each gas were quantified using sensitivity values of H2, HD and D2 gases. It has been confirmed that there are 300 μmol/mol of HD in H2, 2500 μmol/mol of HD in D2, and 5,000 μmol/mol of D2 in HD. Further, planning to develop certified reference material (CRM) produced by high purity substances, which is for analyzing hydrogen isotopes and used as standard material to quantify the impurities of commercial D2 gases.