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A reexamination of cellulose carbon-bound hydrogen δD measurements and some factors affecting plant-water D/H relationships

Yapp, Crayton J. and Epstein, Samuel (1982) A reexamination of cellulose carbon-bound hydrogen δD measurements and some factors affecting plant-water D/H relationships. Geochimica et Cosmochimica Acta, 46 (6). pp. 955-965. ISSN 0016-7037. http://resolver.caltech.edu/CaltechAUTHORS:20131016-103251274

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Abstract

The method of Epstein et al. (1976) for analysis of D/H ratios of cellulose carbon-bound hydrogen has been modified. This modified “renitration” method yields δD values which are in agreement with those obtained by the sodium chlorite delignification method. Comparison of results obtained by the renitration method with the published results of Epstein et al. (1976) indicate some differences in the δD values of individual samples. However, the overall plant-water δD relationship determined by Epstein et al., is not greatly changed upon redetermination by the renitration method. Additional data from a variety of plants representing a wide geographical range reveal that relative humidity is an important variable in determining the δD value of cellulose C-H hydrogen on this inter-regional scale. The role of relative humidity can be reasonably explained by a leaf water model that assumes an isotopic steady-state during transpiration. These results reaffirm the conclusion of Epstein et al., that the δD variations of the source water are the dominant control of the δD variations of cellulose C-H hydrogen from naturally grown plants. Thus, there is an expectation that these cellulose δD variations can have climate significance.


Item Type:Article
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URLURL TypeDescription
http://dx.doi.org/10.1016/0016-7037(82)90051-5DOIArticle
http://www.sciencedirect.com/science/article/pii/0016703782900515PublisherArticle
Additional Information:© 1982 Pergamon Press Ltd. Received August 27, 1981; accepted in revised form January 25, 1982. This research was supported by NSF grant ATM80-18830. We wish to collectively thank those individuals who provided samples for this work. Their names are listed in the appendix. In addition we wish to thank S. Kurisu and D. Sams for assisting with the chemical preparation of some of the samples.
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NSFATM80-18830
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Caltech Division of Geological and Planetary Sciences3676
Record Number:CaltechAUTHORS:20131016-103251274
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20131016-103251274
Official Citation:Crayton J Yapp, Samuel Epstein, A reexamination of cellulose carbon-bound hydrogen δD measurements and some factors affecting plant-water D/H relationships, Geochimica et Cosmochimica Acta, Volume 46, Issue 6, June 1982, Pages 955-965, ISSN 0016-7037, http://dx.doi.org/10.1016/0016-7037(82)90051-5. (http://www.sciencedirect.com/science/article/pii/0016703782900515)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:41942
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:16 Oct 2013 19:35
Last Modified:16 Oct 2013 19:35

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