Acquisition of a DGC Maceral Separation Laboratory: The Key to Maceral-specific Isotopic and Geochemical Analysis

收购 DGC 煤质分离实验室：煤质特定同位素和地球化学分析的关键

• 批准号: 0450898
• 负责人: Susan Rimmer
• 金额: --
• 依托单位: University of Kentucky Research Foundation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-03-15 至 2007-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0450898&HistoricalAwards=false
• 关键词: Acquisition; DGC; Maceral; Separation; Laboratory

0450898RimmerThis grant provides support for the establishment of a density-gradient centrifugation (DGC) facility at the University of Kentucky, Department of Geological Sciences. The facility would enable investigators Susan Rimmer, Ana Carmo, Harold Rowe and their students to separate relatively pure (95%) organic constituents from coals and kerogens for subsequent geochemical and isotopic analysis. In combination with optical petrography, the DGC technique allows for determination of the relative proportions of marine and terrestrial organic matter that make up individual coal and kerogen macerals and, when coupled with mass spectrometry, evaluation of maceral-specific stable isotopic ratios. The DGC facility will support investigations of Devonian-Mississippian black shales and will allow for maceral specific isotopic determinations in order to better evaluate organic matter sources and degree of preservation. Specific equipment that will be purchased includes a centrifuge capable of 20,000 RPM and multiple rotors designed to allow centrifugation at specific cut-point densities. Additional equipment will include a micronizer for fine grinding of demineralized organic materials and various glassware supplies and reagents. The DGC facility will serve the PI's efforts to train students from traditionally underrepresented groups and will be available as multi-user facility for organic geochemists across the country interested in coal petrology and petroleum geochemistry. ***

0450898Rimmer这笔赠款为肯塔基大学地质科学系建立密度梯度离心（DGC）设施提供支持。 该设施将使研究人员 Susan Rimmer、Ana Carmo、Harold Rowe 和他们的学生能够从煤和干酪根中分离出相对纯净 (95%) 的有机成分，以便进行后续的地球化学和同位素分析。与光学岩相学相结合，DGC 技术可以确定构成单个煤和干酪根显微组分的海洋和陆地有机质的相对比例，并与质谱联用，评估显微组分特定的稳定同位素比率。 DGC 设施将支持泥盆纪-密西西比黑色页岩的调查，并将允许进行显微组特定同位素测定，以便更好地评估有机质来源和保存程度。 将购买的具体设备包括一台转速为 20,000 RPM 的离心机和多个转子，旨在允许在特定的切割点密度下进行离心。 额外的设备将包括用于精细研磨脱矿物质有机材料的微粉机以及各种玻璃器皿用品和试剂。 DGC 设施将为 PI 培训传统上代表性不足群体的学生提供服务，并将作为多用户设施供全国各地对煤炭岩石学和石油地球化学感兴趣的有机地球化学家使用。 ***