U.S.-Germany Cooperative Research: Organic Matter Preservation in the Ocean

[12879 . 96] Hedges该奖项支持John Hedges和华盛顿大学的学生与德国不来梅港阿尔弗雷德·韦格纳研究所的Gerhard Kattner合作。该项目将有几个重点，包括研究从河流向海洋输出的有机物质、热带系统的生物地球化学、自然水域中溶解的有机物质的动力学以及海洋沉积物中有机物质的保存。两个小组都在积极开发环境样品中有机物质的分析方法。特别是，该项目将产生一种分析单个氨基酸及其立体异构体的稳定碳和氮同位素组成的方法。此外，美国组将学习AWI组目前采用的氨基酸超灵敏分析的高效液相色谱方法及其表征溶解有机物样品分子量分布的方法。工作计划规定研究生广泛参与国际旅行和研究。

0128796HedgesThis award supports John Hedges and students from Washington University in a collaboration with Gerhard Kattner of the Alfred Wegener Institute in Bremerhaven, Germany. The project will have several foci, including the study of export of organic matter from rivers to the ocean, biogeochemistry of tropical systems, dynamics of dissolved organic matter in natural waters, and preservation of organic materials in marine sediments. Both groups are actively developing analytical methods for organic materials in environmental samples. In particular, the project will produce a method for analysis of the stable carbon and nitrogen isotope compositions of individual amino acids and their stereoisomers. In addition, the US group will learn the high-performance liquid chromatographic method now practiced by the AWI group fro ultra-sensitive analysis of amino acids as well as their methods for characterizing the molecular weight distribution of samples of dissolved organic matter. The work plan provides for extensive participation by graduate students in the international travel and research.