Progress of Cryogenics and Isotopes Separation

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The National Conference with international participation on New Cryogenic and Isotope Technologies for Energy and Environment - EnergEn 2018 is organized by the National Research-Development Institute for Cryogenic and Isotopic Technologies - ICSI Rm. Valcea with the scientific participation of the University of Pitesti and the University of Craiova and will be held at Baile Govora, in 2018.
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EXPERIMENTAL EVIDENCES OF THE INFLUENCE OF NITROGEN GAS ON THE TRIMER IONS IN LOW RESOLUTION MASS SPECTROMETRY OF HYDROGEN ISOTOPES

 

 

N. Bidică*, G. Bulubașa

 

National Institute for Research and Development for Cryogenics and Isotopic Technologies - ICIT Rm. Valcea, Uzinei Street no. 4, P.O. Box Raureni 7, 240050, Ramnicu Valcea, Romania

 

 

ABSTRACT

 

This paper presents experimental results regarding the behaviour of triatomic (trimer) ions formed in the electron impact ion source of a mass spectrometer in the presence of high concentrations of nitrogen gas. These results were obtained during an experimental work performed in order to find solutions to correct the total ion currents (measured at masses of interest) that are affected by isobaric interferences in low resolution mass spectrometry of hydrogen isotopes. A commercial quadrupole mass spectrometer of unit resolution, equipped with an electron impact ion source, was usedto analysehigh purity H2 and D2 and several H2/N2 and D2/N2 mixtures (of different concentrations).

The results show a high influence of nitrogen gas on trimer ions, and this influence could be used to develop new procedures for hydrogen isotopes measurement by low resolution mass spectrometry.

 

                Keywords: hydrogen isotopes, mass spectrometry, triatomic ions (trimers)


*Corresponding author: Nicolae Bidica, phone: 0250.732.744; fax: 0250.732.746; E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it