Fractionation of oxygen isotopes between mammalian bone-phosphate and environmental drinking water

Details Fractionation of oxygen isotopes between mammalian bone-phosphate and environmental drinking water Fractionation of oxygen isotopes between mammalian bone-phosphate and environmental drinking water

Aug 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984gecoa..48.1689l&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 48, Issue 8, pp.1689-1693

Mathematics

Logic

16

Scientific paper

The 18 O of mammalian bone-phosphate varies linearly with 18 O of environmental water, but is not in isotopic equilibrium with that water. This situation is explained by a model of 18 O in body water in which the important fluxes of exchangeable oxygen through the body are taken into account. Fractionation of oxygen isotopes between body and environmental drinking water is dependent on the rates of drinking and respiration. Isotopic fractionation can be estimated from physiological data and the estimates correlate very well with observed fractionation. Species whose water consumption is large relatively to its energy expenditure is sensitive to isotopic ratio changes in environmental water.

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