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Molecular hydrogen isotope analysis of living and fossil plants—Metasequoia as an example

Progress in Natural Science:Materials International 2009年第8期19卷 901-912页

作者： Hong Yang a,b, Qin Leng a,c a Department of Science and Technology, College of Arts and Sciences, Bryant University, Smithfield, RI 02917, USA b Department of Geology and Geophysics, Yale University, New Haven, CT 06520, USA c LPS, Nanjing Institute of Geology and Palaeontology, CAS, Nanjing 210008, China Department of Science and Technology College of Arts and Sciences Bryant University Smithfield RI 02917 USA Department of Geology and Geophysics Yale University New Haven CT 06520 USA LPS Nanjing Institute of Geology and Palaeontology CAS Nanjing 210008 China

Molecular hydrogen isotope analysis preformed on modern and fossil plants has made a significant impact on diverse research fields in biology and geology. Using living and fossil Metasequoia as an example, we review the technology of online GC-IRMS that made the molecular analysis of hydrogen isotope possible and discuss critical issues concerning with the studies of molecular dD and its applications. The apparent hydrogen fractionation factors between lipid molecules and source water (ewater–lipid) vary across plant taxonomy and differ among biomolecules and are affected by multiple environmental factors in which precipitation dD values exercise the first order of control. Eco-physiological factors and environmental parameters are also known to influence dD in plants. Molecular hydrogen isotope analysis of chemically stable lipid molecules, such as n-alkanes, finds a wide range of applications in detecting source sediments, reconstruction of paleoclimatic parameters, inference of air-mass trajectory, as well as in petroleum industry and environmental studies.

关键词： Compound-specific dD Plant molecule hydrogen fractionation Paleoclimate Metasequoia

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