Acquisition of a Gas-Source Mass Spectrometer

0004130法夸尔这笔赠款为马里兰州大学同位素地球化学实验室购买大型扇形气源质谱仪的费用提供部分支持。 PI，詹姆斯法夸尔最近加入了地球系统科学跨学科中心和地质系在马里兰州大学担任助理教授。 该仪器将成为法夸尔硫和氧多同位素地球化学研究项目的主要工具（意味着除了18 O/16 O之外还测量17 O/16 O，以及除了34 S/32 S之外还测量33 S/32 S和36 S/32 S）。 这些不太丰富的氧和硫同位素的同位素比的知识提供的信息，使我们能够获得重要的新的见解化学和物理过程，并提供了解决一类全新的地质和地球化学问题的潜力。 多同位素方法的应用包括生物分馏过程的研究、大气-地表相互作用的研究、大气演化的研究、陨石的研究以及地壳和地幔地球化学的研究。 该设施将补充马里兰州大学地球化学小组（贝克尔、坎佩纳、考夫曼、麦克丹尼尔、麦克多诺、摩根、翁多夫、普雷斯特高、鲁德尼克、托马斯卡克、步行者）目前和计划中的研究能力，并将供马里兰州大学和更广泛的地质和地球化学界的研究人员使用。 ***

0004130FarquharThis grant provides partial support for the costs of acquiring a large sector gas-source mass spectrometer for the Isotope Geochemistry Lab at the University of Maryland. The PI, James Farquhar recently joined the Earth System Science Interdisciplinary Center and Department of Geology at the University of Maryland as an Assistant Professor. The instrument will be the primary tool for Farquhar's research program in multiple isotope geochemistry of sulfur and oxygen (meant to imply measurement of 17O/16O in addition to 18O/16O, and 33S/32S and 36S/32S in addition to 34S/32S). The information provided by a knowledge of isotope ratios involving these less abundant oxygen and sulfur isotopes allows us to gain important new insights into chemical and physical processes and provides the potential to address a whole new class of geological and biogeochemical questions. The applications of the multiple isotope approach include the study of biological fractionation processes, the study of atmosphere-surface interactions, the study of the evolution of the atmosphere, studies of meteorites, and studies of crustal and mantle geochemistry. The facility will complement present and planned research capabilities of the University of Maryland geochemistry group (Becker, Candela, Kaufman, McDaniel, McDonough, Morgan, Ondov, Prestegaard, Rudnick, Tomascak, Walker) and will be accessible to researchers at the University of Maryland and in the wider geological and geochemical community. ***