Acquisition of a stable isotope ratio mass spectrometer for climate change research

这笔赠款将支持购买一台稳定的同位素比质谱仪(SIRMS)，用于气候变化研究。他们打算购买GV Isoprime IRMS，它将与连续流动元素分析仪接口，并配备MultiCarb样品制备和呈现模块，用于自动化分析，测量各种有机和无机材料上O、N和C的同位素比率。Pis、Thunell和Kohn的同位素研究将集中在全新世和晚更新世的高分辨率气候研究上。具体地说，索内尔的研究将考察热带地区在全球气候变化中的作用。科恩的研究将侧重于化石的分析，这些化石是气候变化和构造的古生态和古气候监测器。购买新的IRMS不仅将通过与50多名其他地球科学家的持续合作来加强南加州大学的研究计划，而且还将大大增加正在进行的学生培训。这两个PIS目前有8名研究生(6名博士和2名硕士)，他们都在接受稳定同位素地球化学的实践培训。***

0545623ThunellFunds form this grant will support acquisition of a stable isotope ratio mass spectrometer (SIRMS) for climate change research. The intend to purchase a GV Isoprime IRMS that will be interfaced with a continuous flow element analyzer and outfitted with a MultiCarb sample preparation and presentation module for automated analyses for the measurement of isotope ratios of O, N, and C on a variety of organic and inorganic materials. Isotopic research by PIs Thunell and Kohn will focus on high-resolution climate studies of the Holocene and late Pleistocene. Specifically, Thunell's research will examine the role of the tropics in global climate change. Kohn's research will focus on analysis of fossils as paleoecological and paleoclimatic monitors of climate change and tectonics. The acquisition of a new IRMS will not only strengthen USC research programs through on-going collaborations with over 50 other geoscientists but will also add considerably to ongoing student training. The two PIs presently have 8 graduate students (6 PhD and 2 MS), all of whom are receiving practical training in stable isotope geochemistry. ***