Carbon isotope fractionation during photosynthesis
作者： R. Park , S. Epstein
DOI: 10.1016/S0016-7037(60)80006-3
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摘要: A study was made of the reasons for isotopic fractionation in photosynthesis and the various factors controlling it. CO/sub 2/samples from plants, air, and calcium carbonate were analyzed in a mass spectrometer in order to determine C/sup 13//C/sup 12/and O/sup 18//O/sup 16/ratios. The relative is otopic compositions of the samples and the fractionation factor between CO/sub 2/and fixed plant carbon were determined. The effects of high light intensities on the fractionation factors of photosynthesis were studied. Results indicated that …
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