Cenozoic History of Lithium Isotopes in Seawater as Recorded in Foraminifera - A Feasibility Study

有孔虫记录的海水中锂同位素的新生代历史 - 可行性研究

• 批准号: 0241807
• 负责人: Philip Froelich
• 金额: $ 10.62万
• 依托单位: Georgia Tech Research Corporation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-04-01 至 2005-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0241807&HistoricalAwards=false
• 关键词: Cenozoic; History; Lithium; Isotopes; Seawater

The effort will develop ICP-MS analytical methods needed to analyze lithium isotopes in small samples (~2mg) of planktic foraminifers. If the technique, which utilizes a quadrupole ICP-MS, is successful the study will analyze core top samples to determine if current seawater Li-isotope signal is accurately recorded and retained in chemically cleaned planktic foraminifer shells. In addition the study will analyze separate species of planktic foraminifers in core top samples to test for isotopic fractionation among different species as a function of biologic or calcification depth.

这项工作将开发ICP-MS分析方法，用于分析浮游有孔虫小样本（~2mg）中的锂同位素。如果这项利用四极ICP-MS的技术取得成功，该研究将分析岩心顶部样本，以确定当前海水锂同位素信号是否被准确记录并保留在化学清洗过的浮游有孔虫壳中。此外，该研究将分析岩心顶部样品中不同种类的浮游有孔虫，以测试不同物种之间的同位素分馏作为生物或钙化深度的函数。