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.
GONFIANTINI Roberto;
VALKIERS Staf;
TAYLOR P.D.P.;
DE BIEVRE P.;
1997-05-28
JRC14861
https://publications.jrc.ec.europa.eu/repository/handle/JRC14861,
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