@article{JRC14861, address = {}, year = {1997}, author = {Gonfiantini R and Valkiers S and Taylor P and De Bievre P}, 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. }, title = {Adsorption in Gas Mass Spectrometry. II. Effects on the Measurement of Isotope Amount Ratios.}, type = {}, url = {}, volume = {171}, number = {}, journal = {Intern. Journal of Mass Spectrometry and Ion Processes}, pages = {231-242}, issn = {}, publisher = {}, doi = {} }