| Molecular hydrogen isotope analysis of living and fossil
plants—Metasequoia as an example |
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| 作者单位： | Hong Yang(Department of Science and Technology, College of Arts and Sciences, Bryant University, Smithfield, R1 02917, USA;Department of Geology and Geophysics, Yale University, New Haven, CT 06520, USA);Qin Leng(Department of Science and Technology, College of Arts and Sciences, Bryant University, Smithfield, R1 02917, USA;LPS, Nanjing Institute of Geology and Palaeontology, CAS, Nanjing 210008, China) |
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| 基金项目： | CAS，the CAS/ SAFEA International Partnership Program for Creative Research Teams，the Major Basic Research Projects，国家自然科学基金，the American Chemical Society Petroleum Research Funds，Robert Pat-alano and Liang Xiao for preparing diagrams and refer-ences，the contribution for theLaboratory of Terrestrial Environment at Bryant University |
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| 摘 要： | 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.
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| 关 键 词： | 同位素分析 化石植物 氢分子 国家自然科学基金委员会 水杉 生活 中国科学院 科学出版社 |
| 收稿时间： | 25 August 2008 |
| 修稿时间： | 15 September 2008 |
Molecular hydrogen isotope analysis of living and fossil plants——Metasequoia as an example |
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| Authors: | Hong Yang Qin Leng |
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| Institution: | 1. Department of Science and Technology, College of Arts and Sciences, Bryant University, Smithfield, R1 02917, USA;Department of Geology and Geophysics, Yale University, New Haven, CT 06520, USA
2. Department of Science and Technology, College of Arts and Sciences, Bryant University, Smithfield, R1 02917, USA;LPS, Nanjing Institute of Geology and Palaeontology, CAS, Nanjing 210008, China |
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| Abstract: | 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 δD and its applica-tions. The apparent hydrogen fractionation factors between lipid molecules and source water (δwater lipid) vary across plant taxonomy and differ among biomolecules and are affected by multiple environmental factors in which precipitation δD values exercise the first order of control. Eco-physiological factors and environmental parameters are also known to influence δD 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, recon-struction of paleoclimatic parameters, inference of air-mass trajectory, as well as in petroleum industry and environmental studies.2009 National Natural Science Foundation of China and Chinese Academy of Sciences. Published by Elsevier Limited and Science in China Press. All rights reserved. |
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| Keywords: | Plant molecule Hydrogen fractionation Paleoclimate Metasequoia |
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