MRI: Acquisition of a 193nm Laser Ablation Sampling System to Expand Interdisciplinary Uses of an Element2 ICP-MS

MRI：采购 193nm 激光烧蚀采样系统以扩展 Element2 ICP-MS 的跨学科用途

• 批准号: 0923290
• 负责人: James Student
• 金额: $ 21.93万
• 依托单位: Central Michigan University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-09-15 至 2012-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0923290&HistoricalAwards=false
• 关键词: MRI; Acquisition; 193nm; Laser; Ablation

0923290Student In this proposal submitted to the Major Research Instrumentation (MRI) Program, the PIs request ~$219K to acquire a 193nm Laser Ablation (LA) system to be used with an existing Element2 ICP-MS analyzer. The instrument will be used for trace element analyses in isotopic ratio profiling, geothermometry, compositional studies, fluid and melt inclusion chemistry, and precision spot analysis on diverse materials. The LA system will support faculty research projects spanning the range from petrology and geochemistry to biology, environmental chemistry and materials characterization. Several projects are outlined by the PIs. The PI will use the LA system to determine magmatic rock evolution from the midcontinental rift system. Melt inclusions will be assayed in order to understand midcontinental rift system evolution. The LA system will be used to better understand pegmatite crystallization and compositional evolution. Li, Cs, Ta, W, Sn and other elements can be assayed to infer melt cooling characteristics and histories. The LA-ICP-MS system will be used to better define the White-Inyo batholyth's petrologic evolution. Trace element concentrations will help infer pressure and temperature characteristics in plutonic minerals. In a human-impact context, the LA-ICP-MS system will be used to assay mercury absorption by polymeric materials in power-plant gaseous effluents. Additional polymer matrices will assayed for effectiveness in removing metals from aqueous waste streams. The system will also be used to titanium and other metals content in epoxidation catalysts developed at Central Michigan. Collaborative ecological studies will focus on assaying metals contamination and natural variability in mollusk shell carbonates and fish otoliths and scales. The instrument will incorporated with a newly-funded Thermo Element2 ICP-MS and will be housed in the CMU Geology Department. The site has been prepared for the Element2 and will accommodate necessary power, ventilation, gas cylinder storage, and videoconferencing equipment. The PI team has hands-on experience with LA-ICP-MS systems from other laboratories and will be responsible for administering the instrument and training. Trained users will be allowed to operate the system. The PIs will be responsible for maintenance, repairs and calibration. The Geology, Chemistry and Biology departments will contribute to annual operating costs and service contract funds. The instrumentation will serve a regional and community need. Within the University, multiple departments will directly benefit from this instrument enhancement. It will be incorporated into current undergraduate and graduate programs - and into the newly created Science of Advanced Materials PhD program. The system will enhance local environmental projects with direct human-impact relevance. The system will be connected to classroom instruction through videoconferencing systems and students will gain hands-on experience with state-of-the-art modern instrumentation. ***

0923290学生在提交给重大研究仪器（MRI）计划的提案中，PI要求约21.9万美元购买193 nm激光消融（LA）系统，以与现有的Element 2 ICP-MS分析仪配合使用。该仪器将用于同位素比率剖面、地质测温、成分研究、流体和熔体包裹体化学以及对各种材料的精确点分析中的微量元素分析。LA系统将支持从岩石学和地球化学到生物学，环境化学和材料表征的教师研究项目。主要研究者概述了几个项目。PI将使用LA系统来确定中大陆裂谷系统的岩浆岩演化。熔融包裹体的分析将有助于了解大陆裂谷系的演化。LA系统将用于更好地了解伟晶岩结晶和成分演化。Li、Cs、Ta、W、Sn和其它元素的分析可以推断熔体的冷却特征和历史。LA-ICP-MS系统将用于更好地确定White-Inyo岩基的岩石演化。微量元素的含量有助于推断深成矿物的压力和温度特征。在人类影响的背景下，LA-ICP-MS系统将用于分析发电厂气态排放物中聚合物材料的汞吸收。将测定另外的聚合物基质在从含水废物流中去除金属方面的有效性。该系统还将用于中密歇根州开发的环氧化催化剂中的钛和其他金属含量。合作生态研究将侧重于分析软体动物壳碳酸盐和鱼耳石和鳞片中的金属污染和自然变异。该仪器将与新资助的Thermo Element 2 ICP-MS相结合，并将安置在CMU地质系。该场地已为元素2做好准备，将容纳必要的电力、通风、气瓶储存和视频会议设备。PI团队具有来自其他实验室的LA-ICP-MS系统的实践经验，并将负责管理仪器和培训。经过培训的用户将被允许操作该系统。PI将负责维护、维修和校准。地质学、化学和生物学系将提供年度业务费用和服务合同资金。仪器将满足区域和社区的需要。在大学内，多个部门将直接受益于这一工具的增强。它将被纳入目前的本科和研究生课程-并纳入新创建的先进材料科学博士课程。该系统将加强与人的直接影响相关的地方环境项目。该系统将通过视频会议系统连接到课堂教学，学生将获得最先进的现代仪器的实践经验。***