Developing Rare Earth Elements as a Paleoceanographic Proxy for bottom Water Oxygen, Water Mass, and Carbon Cycling: Separating Primary and Diagenetic Influences

开发稀土元素作为底层水氧、水质量和碳循环的古海洋学代理：分离主要影响和成岩影响

• 批准号: 9986399
• 负责人: Gary Klinkhammer
• 金额: $ 6万
• 依托单位: Oregon State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-03-01 至 2001-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9986399&HistoricalAwards=false
• 关键词: Developing; Rare; Earth; Elements; Paleoceanographic

The distribution of Rare Earth Elements (REEs) depends on the redox behavior of the environment. Therefore, past oceanographic conditions might be elucidated by studying the REE content of foraminifera in deep sea sediments. This has proven to be a difficult analytical task however because this set of elements is prone to contamination, and it is difficult to clean the foram shells to assure artifact-free interpretation. This work will utilize a newly developed flow-through leaching technique which hopefully will solve this difficult analytical problem. The technique will utilize automated ion chromatography interfaced to an inductively coupled plasma mass spectrometer (ICPMS).

稀土元素的分布取决于环境的氧化还原行为。因此，研究深海沉积物中有孔虫的稀土元素含量可以解释过去的海洋条件。这已被证明是一项困难的分析任务，然而，因为这组元素容易受到污染，并且很难清洁有孔虫壳以确保无人工制品的解释。这项工作将利用一种新开发的流动浸出技术，有望解决这一困难的分析问题。该技术将利用与电感耦合等离子体质谱计（ICPMS）接口的自动离子色谱。