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

在这个提交给主要研究仪器（MRI）项目的提案中，pi要求219K美元购买一个193nm激光烧蚀（LA）系统，与现有的Element2 ICP-MS分析仪一起使用。该仪器将用于痕量元素的同位素比分析、地温测量、成分研究、流体和熔体化学以及各种材料的精确斑点分析。LA系统将支持教师的研究项目，从岩石学、地球化学到生物学、环境化学和材料表征。pi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。将分析熔体包裹体，以了解中大陆裂谷系统的演化。LA系统将用于更好地了解伟晶岩的结晶和成分演化。Li, Cs, Ta， W， Sn等元素的分析可以推断熔体的冷却特性和历史。LA-ICP-MS系统将用于更好地定义White-Inyo岩浆岩的岩石学演化。微量元素浓度有助于推断深部矿物的压力和温度特征。在人类影响的背景下，LA-ICP-MS系统将用于测定电厂废气中聚合物材料对汞的吸收。附加的聚合物基质将被用于测定从水废物流中去除金属的有效性。该系统还将用于在密歇根州中部开发的环氧化催化剂中钛和其他金属的含量。合作生态学研究将侧重于分析软体动物壳碳酸盐和鱼类耳石和鳞片中的金属污染和自然变异性。该仪器将与新资助的Thermo Element2 ICP-MS合并，并将被安置在CMU地质系。该场地已为Element2做好准备，并将容纳必要的电力、通风、气瓶存储和视频会议设备。PI团队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。经过培训的用户可以操作该系统。pi将负责维护、修理和校准。地质系、化学系和生物系将承担年度运营成本和服务合同资金。该仪器将满足区域和社区的需要。在大学内，多个院系将直接受益于这一仪器的改进。它将被纳入目前的本科和研究生课程，以及新成立的先进材料科学博士课程。该系统将加强与人类直接相关的地方环境项目。该系统将通过视频会议系统与课堂教学相连接，学生将获得最先进的现代仪器的实践经验。＊＊＊

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. ***