Development of Isotope Ratio Measurements Using FTMS (Fourier Transform Mass Spectrometry)

傅立叶变换质谱学(FTMS)具有极高的质量分辨率、灵敏度和数据采集速度等优异的固有能力，在地质年代学和其他同位素地球化学应用中具有巨大的潜力。纽约州立大学奥尔巴尼分校的一个地球科学家团队最近安装了一个FTMS系统，该系统是用NSF和纽约州立大学的基金以50-50的成本分摊购买的。这项建议要求为一名博士后助理研究员提供两年的资助，以协助开发地球科学的FTMS应用程序。在此期间，副研究员将专注于优化同位素比测量的精确度，包括射频激发扫描和质量分馏效应，以及锆石中铅/铀比的测量。该项目的直接目标是确定FTMS方法对地球科学研究中遇到的样品的适用性。

Fourier transform mass spectrometry (FTMS) has excellent inherent capabilities of very high mass resolution, sensitivity and speed in data collection that give it enormous potential in geochronology and other isotope geochemistry applications. A team of geoscientists at the State University of New York- Albany has recently installed a FTMS system purchased with NSF and SUNY funds on a 50-50 cost-sharing basis. This proposal requests funds to support a postdoctoral research associate for two years to aid in the development of FTMS applications for the geosciences. The research associate will focus during this period on optimizing the precision of isotope ratio measurements, including RF excitation sweep and mass fractionation effects, and on measurements of Pb/U ratios in zircons. The immediate goal of this project is to determine the applicability of the FTMS method for samples encountered in earth science research.