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  • P-ISSN 2233-4203
  • E-ISSN 2093-8950

Methodological Study on Measurement of Hydrogen Abundance in Hydrogen Isotopes System by Low Resolution Mass Spectrometry

Mass Spectrometry Letters / Mass Spectrometry Letters, (P)2233-4203; (E)2093-8950
2011, v.2 no.1, pp.1-7
Li Jin-ying (China National Nuclear Corporation)
Shi Lei (China Institute of Atomic Energy)
Hu Shi-lin (China Institute of Atomic Energy)
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China’s rapid economic growth has resulted in significant environmental side-effects. Therefore, China has beeninterested in reducing her dependence on foreign oil and gas by developing technologies needed for hydrogen, in addition to herincreasing energy mix of nuclear and renewable energy form such as solar and wind power. There are three isotopes of hydrogen,i.e. protium (P or H), deuterium (D), and tritium (T). Both deuterium and tritium are important materials in nuclear fuel cycleindustry. Tritium is one of the critical radioactive nuclides. Planning for and implementing contamination control as a part ofnormal operation and maintenance activities is an important function in any hydrogen facility, especially tritium facility. Thedevelopment of hydrogen isotopes analysis is the key issues in this area. Mass spectrometry (MS) with medium (about 600) andhigh resolution (>1400) is commercially available; however, the routine analysis of hydrogen isotopes is done with low-resolutionMS (<200) in China. This paper summarizes the progress of MS measurement technology for hydrogen isotope abundance inChina, focusing on our lab’s research program and technical status. An analyzing method has been introduced for accurate measurementof tritium abundance in the H-D-T system by low resolution MAT-253 MS. The quotient of compression ratio coefficient isdetermined based on building up equipment for laboratory-scale preparation of secondary standard gases and considering thedifference in sensitivity between hydrogen isotopes. The results show that the measured value is believable in the relative errorrange of 0.8% for gas samples of different tritium abundance.

Hydrogen Isotopes, Tritium Abundance, Low Resolution Mass Spectrometry, Compression Ratio Coefficient



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