Hydrogen Isotopic Biogeochemistry

尽管有机地球化学和生物地球化学领域通过稳定同位素分布和交换的研究取得了显著进展，但氢的同位素尚未得到与有机化合物中氢丰度相称的研究重视。在这个项目中，首席研究员将开发仪器和新的研究技术来研究影响天然有机分子中氢同位素分布的过程。通过研究常见氢和氘的化合物特异性分布，他希望解开分解过程中负责同位素分馏的过程，并通过分解和在海洋沉积物和食物链中的积累来跟踪最初的植物脂。研究中将包括各种来源植物。

ABSTRACTOCE-9986727Although the fields of organic geochemistry and biogeochemistry have advanced significantly through studies of stable isotope distributions and exchange, the isotopes of hydrogen have not received a level of research attention commensurate with the abundance of hydrogen in organic compounds. In this project, the principal investigator will develop instrumentation and new research techniques to study processes affecting the distribution of hydrogen isotopes in natural organic molecules. By study of compound-specific distributions of common hydrogen and deuterium, he expects to disentangle the processes responsible for isotopic fractionation during decomposition and to follow initial plant lipids through decomposition and accumulation in marine sediments and food chains. A variety of source plants would be included in the study.