Acquisition of elemental analyzer system and balance for C,N, and S content and isotope analyses

曼尼托巴大学最近从加拿大创新基金会获得了740万美元的资助，用于建立曼尼托巴区域材料和表面表征设施。作为该设施的一部分，建立了一个二次离子质谱（SIMS）实验室。地质科学系（Fayek, Hawthorne, Halden, Camacho, Bekker），化学系（Freund），机械工程系（Cahoon, Chaturvedi），电气工程系（Buchanan）以及其他几个研究人员都从曼尼托巴大学的SIMS实验室中受益匪浅。本课题的一个主题是加强在不同时间尺度和不同环境条件下生物地球化学碳、氮和硫循环的合作研究，以及对这些生物地球化学信号在成岩作用、变质作用、辐射裂解作用和地幔俯冲作用中所经历的蚀变的理解。最近，Fayek建立了一个CFI和RTI资助的稳定同位素实验室，因为曼尼托巴大学没有稳定同位素分析的仪器。虽然这个实验室主要用于SIMS研究，但它也将被其他教师和学生用于稳定同位素研究。实验室拥有质谱仪和两个外围设备：热转换元素分析仪（TC-EA）和GasBench III，用于分析水中碳酸盐和溶解无机碳的C和O同位素。结合起来，这种基础结构允许对某些材料进行同位素表征（例如碳、硫、氢和氧）。然而，这些设备既不适合也不有效地表征沉积物中C、N和S的还原性化合物，而这对PI和co -申请人的研究至关重要。目前，本系和学校尚缺乏高精度、高通量的小样本C、N、S同位素在线分析系统。因此，这里所要求的基础设施将用于建立马尼托巴大学目前不存在的能力，但对于申请人以及其他部门的其他研究人员的前沿研究是必要的。

The University of Manitoba was recently awarded a $7.4 M from the Canada Foundation for Innovation to establish the Manitoba Regional Materials and Surface Characterization Facility.  A Secondary-ion mass spectrometry (SIMS) laboratory was established as part of this facility.  The departments of Geological Sciences (Fayek, Hawthorne, Halden, Camacho, Bekker), Chemistry (Freund), Mechanical Engineering (Cahoon, Chaturvedi), Electrical Engineering (Buchanan), and several other researchers greatly benefit from the SIMS laboratory at the University of Manitoba.A theme of this proposal is to enhance a collaborative study of biogeochemical carbon, nitrogen, and sulfur cycles on various temporal scales and in different environmental settings as well as the understanding of alteration that these biogeochemical signals experienced by diagenesis, metamorphism, radiolysis, and subduction to the mantle.  Recently, Fayek established a CFI and RTI funded stable isotope laboratory, since instrumentation for stable isotope analysis did not exist at the University of Manitoba.  Although this lab is primarily dedicated to SIMS research, it will also be used by other faculty and students for stable isotope studies.  The laboratory has the mass spectrometer with two peripherals: thermal conversion elemental analyzer (TC-EA) and GasBench III for C and O isotope analyses of carbonates and dissolved inorganic carbon in waters.  Combined, this infrastructure permits isotopic characterization (e.g. C, S, H, and O) of some materials.  However, these devices are neither appropriate nor efficient to isotopically characterize reduced compounds of C, N, and S in sediments, which are pivotal to the research of the PI and Co-applicants.  The online system for C, N, and S isotope analysis of small samples with high precision and accuracy and large sample throughput is still missing in the department and at the university.  Therefore, the infrastructure requested here will be used to establish a capability that currently does not exist at the University of Manitoba, but is necessary for cutting edge research of the applicants as well as other researchers in other departments.