Mechanisms of Organic Matter Preservation in Marine Sediments: A Focus on Black Carbon and Nonextractable Alkyl Components

海洋沉积物中有机物的保存机制：关注黑碳和不可萃取的烷基成分

• 批准号: 0002391
• 负责人: Paul Quay
• 金额: $ 60万
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-10-01 至 2005-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0002391&HistoricalAwards=false
• 关键词: Mechanisms; Organic; Matter; Preservation; Marine

ABSTRACTOCE-0002391In this project, an marine organic geochemist at the University of Washington will continue his long-time program of research into the forms, distributions and preservation of major forms of organic matter in marine sediments. In particular, this present project has three major goals. In its principal initiative, the research team will characterize bulk sedimentary organic material by a combination of solid-state 13C NMR and other techniques. A special effort will be made to investigate the nature of the "black carbon" and the organic nitrogen abundant in sediments throughout the world ocean; despite their ubiquity, both are notoriously difficult to study. Secondly the team will study the forms and reactions of sedimentary organic matter that react with oxygen. Finally, a new molecular method for measuring tannins in the environment will be finished. Such studies are important for understanding how carbon is cycled in the present day ocean as well as in the longer geological context of burial, uplift, and re-exposure to weathering and exploitation by humans.

ABSTRACTOCE-0002391在这个项目中，华盛顿大学的一位海洋有机地球化学家将继续他对海洋沉积物中有机物主要形式的形式、分布和保存的长期研究计划。 具体来说，本项目有三个主要目标。 在其主要举措中，研究小组将结合固态 13C NMR 和其他技术来表征大块沉积有机物质。 将特别努力调查世界海洋沉积物中丰富的“黑碳”和有机氮的性质；尽管它们无处不在，但众所周知，它们都很难研究。 其次，该团队将研究沉积有机物与氧气发生反应的形式和反应。 最终，一种测量环境中单宁酸的新分子方法将完成。 此类研究对于了解碳在当今海洋以及埋藏、抬升和重新暴露于风化和人类开采的更长期地质背景中如何循环非常重要。