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|Title:||Adsorption in Gas Mass Spectrometry. II. Effects on the Measurement of Isotope Amount Ratios.|
|Authors:||GONFIANTINI Roberto; VALKIERS Staf; TAYLOR P.d.p.; DE BIEVRE P.|
|Citation:||Intern. Journal of Mass Spectrometry and Ion Processes vol. 171 p. 231-242|
|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 Institute:||Institute for Reference Materials and Measurements|
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