Does anyone know the extent of oxygen isotope fractionation which occurs
for carbon dioxide WITHIN a mass spectrometer?

In other words, by how much would the ratio of 12C18O16O to 12C16O16O
arriving at the collectors differ from the ratio of the gas entering the
source? Qualitatively?

Tim H.E. Heaton

NERC Isotope Geosciences Laboratory 
British Geological Survey
Keyworth, Nottingham NG12 5GG, England
(www.bgs.ac.uk/nigl/index.htm)

Tel. +44(0)115 936 3401
Email: [log in to unmask]



***************************************************************************************************************
This message (and any attachments) is for the recipient only. NERC is subject to the Freedom of Information Act 2000 and the contents of this email and any reply you make may be disclosed by NERC unless it is exempt from release under the Act. Any material supplied to NERC may be stored in an electronic records management system.
***************************************************************************************************************