Title: Adsorption in Gas Mass Spectrometry. II. Effects on the Measurement of Isotope Amount Ratios.
Citation: Intern. Journal of Mass Spectrometry and Ion Processes vol. 171 p. 231-242
Publication Year: 1997
JRC N°: JRC14861
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC14861
Type: Articles in periodicals and books
Abstract: The effects of adsorption in the mass spectrometer inlet system on the measured isotope amount ratios are discussed. A model is proposed to correct for these effects. The values of the isotope amount ratios obtained with the help of the model are about 1x10(exp-5) lower than the values obtained by linear extrapolation. The model enables to estimate the isotope fractionation factors involved in the effusion, adsorption and desorption processes.
JRC Directorate:Health, Consumers and Reference Materials

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