MRI: Acquisition of an Isotope Ratio Mass Spectrometer for Geochemical Biological and Petrologic Research, Education and Training at Southern Illinois University

0821646 Lefticariu该提案寻求资金（69%），以获得IRMS系统和三个样品制备外围设备，用于研究，教育和培训。该仪器将支持多个学科（地质学、动物学、野生生物学、渔业、化学、生物化学、植物生物学、人类学、煤炭研究、工程学和微生物学）。具体为：1）Thermo Delta V（带双入口），2）Gasbench II，3）EA和4）TC-EA（用于化合物特定和#61540;D分析）。要解决的具体科学问题包括：辐射化学研究涉及从放射性粒子到水的能量转移的研究，获得离子和水合和自由基的形式。这些氧化物质的形成是化能自养的基础。这个过程可能会留下氧和硫同位素分馏的指纹。结果可能会导致更好的预测铀矿床。伊利诺伊州是一个大型煤炭供应商，但它的硫含量相对较高（2%）。PI计划对伊利诺伊州的煤炭矿床（C、N、H和S同位素）进行代表性分析。将评估底栖有孔虫O和C同位素比率，并用于确定南极洲（特别是拉森冰架）的古气候代用指标。IRMS资源将用于元素岩石地球化学、流体包裹体测温和放射性测年。内部仪器将允许更快地产生初步数据？提供更及时的提案和论文提交以及更大的研究生培训和支持。稳定碳同位素分析将应用于与人类定居到亚北极北美相吻合的事件视界的样本。同位素将能够区分沉积记录中的天然和外星碳物种。耳石中的稳定同位素分析将用于了解鱼类饮食和环境历史。重点将放在农业径流对鱼类饮食的影响上。15 N将被用来研究溪流中的食物网动态及其与两栖动物的关系，营养结构将相对于初级植物生产者（C3与C4）进行阐述。利用污染物中稳定同位素比率的自然变化，研究污染物的胶体/颗粒分配。管理计划将IRMS安置在SIUC质谱设施中。将聘请一名专职科学家来支持该仪器。行政部门已承诺为技术员提供薪金支助（3年）。科学家将负责支持仪器维护、调度、培训和协作。样品报酬将是内部支助的一种手段。费用将根据样品预制备的水平而定。将支持课堂讲座/实验室。此次收购将支持20个项目，支持10个不同的机构，跨越9个PI和他们的45名学生。该仪器将被纳入本科生和SIUC-本科生研讨会计划的研究经验。将向23名女生和7名代表性不足的学生提供支助。IRMS计划支持SIUC 4个部门内的18门课程。***

0821646LefticariuThis proposal seeks funding (69%) to acquire an IRMS system and three sample preparation peripherals for research, education and training. The instrument will support multiple disciplines (geology, zoology, wildlife science, fisheries, chemistry, biochemistry, plant biology, anthropology, coal research, engineering and microbiology). Specific are: 1) Thermo Delta V with dual inlet, 2) Gasbench II, 3) an EA and 4) a TC-EA for compound-specific and D analysis. Specific science questions to be addressed include: Radiation chemistry studies involve the study of energy transfer from radiological particles to water procuring ionic and hydrated and radical forms. These oxidizing species form be the basis of chemoautotrophy. This process may leave a fingerprint in terms of oxygen and sulfur isotope fractionation. Results may lead to better predictions for uranium deposits. Illinois is a large supplier of coal, but it is relatively high in sulfur content ( 2%). The PI intends to perform representative analyses of (C, N, H, and S isotope) Illinois coal deposits. Benthic foraminifera O and C isotope ratios will be assessed and used to define paleoclimate proxies in Antarctica (specifically the Larsen Ice Shelf). IRMS resources will be used for elemental rock geochemistry, fluid inclusion thermometry, and radiometric dating. In-house instrumentation will allow more rapid production of preliminary data ? feeding more timely proposal and paper submissions and greater graduate student training and support. Stable carbon isotope analysis would be applied to samples from the event horizon coinciding with human settlement into sub-Arctic North America. Isotopes would be able to differentiate between natural and extraterrestrial carbon species in the sedimentary record. Stable isotope analysis in otoliths will be used to understand fish diets and environmental history. Emphasis will be on the impacts of agricultural runoff on fish diets. 15N will be used to study food web dynamics in streams and its relation to amphibian extinctions Trophic structure will be elucidated relative to primary plant producers (C3 vs C4). Colloid/particle partitioning of contaminants will be studied taking advantage of the natural variations in stable isotope ratios in contaminants. The management plan the IRMS housed in the SIUC Mass Spectrometry Facility. A dedicated staff scientist will be hired to support the instrument. A salary support commitment for the technician (3 years) has been offered by the administration. The staff scientist will be responsible for supporting instrument maintenance, scheduling, training, and collaboration. Sample remuneration will be one means of in-house support. Charges will be based on the level of sample pre-preparation. In-class lecture/lab will be supported. The acquisition would support 20 projects supported y 10 different agencies spanned over 9 PIs and their 45 students. The instrument will be incorporated into Research Experiences for Undergraduates and SIUC-Undergraduate Workshop programs. Support will be given to 23 female and 7 underrepresented students. The IRMS is planned to support 18 courses within 4 departments at SIUC. ***