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. 1988:52:2251-5.
doi: 10.1016/0016-7037(88)90127-5.

Deuterium exchange during acid-demineralisation

J F Kerridge  1 , S Chang, R Shipp
Collaborators, Affiliations

Deuterium exchange during acid-demineralisation

J F Kerridge et al. Geochim Cosmochim Acta. 1988.

Abstract

Isotopic analyses of residues prepared by demineralisation of the Murchison meteorite using D-labelled reagents provide evidence for measurable exchange of H-isotopes between residue and reagents. Precise quantification of this effect is precluded by substantial inhomogeneity of the meteoritic organic matter. A conservative estimate of the degree of exchange is 3 to 5% of the H pyrolysable as H2O. This could affect the shape of the curve defining D-release as a function of temperature, but does not change conclusions previously drawn concerning the nature of the bulk D-enrichment of insoluble organic matter in meteorites.

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