Acquisition of instrumentation for biogeochemical research at the University of Maryland

这笔赠款支持购买设备，以升级马里兰大学地质学系的稳定同位素设施。将购买的具体设备包括：1)碳/硫分析仪(CS分析仪)，用于燃烧大宗样品的总S、总碳和总无机碳(TIC)丰度；以及2)气相色谱/燃烧/热解(GC/C/P)进气系统，用于分离沉积物中的有机提取物和顺序燃烧碳和氢同位素组成。该设备将支持Pi和他的同事对地球早期(太古宙和元古界)生物地球化学过程和气候变异性的研究，并通过表征保存在古代沉积岩中的化合物的特定稳定同位素比率和有机分子结构的新分析能力来扩大这项研究。该实验室的扩展能力还将支持来访的科学家、研究生、本科生和高中生的项目。

0842268KaufmanThis grant supports acquisition of equipment to upgrade the stable isotope facility at the University of Maryland, Department of Geology. Specific equipment that will be acquired includes: 1) a Carbon/Sulfur analyzer (CS analyzer) for combustion of bulk samples for total S, total C, and total inorganic C (TIC) abundances of bulk samples; and 2) a gas chromatograph/combustion/pyrolysis (GC/C/P) inlet system for the separation of organic extracts from sediments and sequential combustion for C and H isotope compositions. The equipment will support PI and colleague studies of biogeochemical processes and climate variability on the early Earth (Archean and Proterozoic eons) and allow expansion of this research through new analytical capability for characterization of compound specific stable isotopic ratios and the structure of organic molecular compounds preserved in ancient sedimentary rocks. The expanded capabilities fo this laboratory will also support visiting scientists, graduate, undergraduate and high school student projects.