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

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Author(s): Jin-ying Li | Lei Shi | Shi-lin Hu

Journal: Mass Spectrometry Letters
ISSN 2233-4203

Volume: 2;
Issue: 1;
Start page: 1;
Date: 2011;

Keywords: Hydrogen Isotopes | Tritium Abundance | Low Resolution Mass Spectrometry | Compression Ratio Coefficient

ABSTRACT
China’s rapid economic growth has resulted in significant environmental side effects. Therefore, China has been interestedin 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 (> 1,400) 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 coefficientis determined by building up equipment for laboratory-scale preparation of secondary standard gases and by considering the differencein sensitivity between hydrogen isotopes. The results show that the measured value is reproducible within the relative errorrange of 0.8% for gas samples of different tritium abundance.

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Tangokurs Rapperswil-Jona

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