The D/H ratio of cellulose as a biochemical thermometer: A comment on ``climatic implications of the D/H ratio of hydrogen in C-H groups in tree cellulose'' by S. Epstein and C.J. Yapp

Details The D/H ratio of cellulose as a biochemical thermometer: A comment on ``climatic implications of the D/H ratio of hydrogen in C-H groups in tree cellulose'' by S. Epstein and C.J. Yapp The D/H ratio of cellulose as a biochemical thermometer: A comment on ``climatic implications of the D/H ratio of hydrogen in C-H groups in tree cellulose'' by S. Epstein and C.J. Yapp

Aug 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977e%26psl..36..246w&link_type=abstract

Earth and Planetary Science Letters, Volume 36, Issue 1, p. 246-248.

Physics

1

Scientific paper

Epstein and Yapp's criticism of our paper is answered. It is shown that for all trees so far studied, the cellulose laid down in a warmer period contains C-H hydrogens depleted in deuterium with respect to cellulose laid down in a colder period. Since this is the opposite to that predicted by thermodynamics it is probably due to the temperature effects on one or more of the biochemical reactions leading to cellulose.

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