Acquisition of an Isotope Ratio Mass Spectrometer System for the University of California, Davis

0348970斯佩罗这笔赠款支持加州戴维斯大学地质系购置一台新的稳定同位素比质谱仪（SIRMS）。 ThermoElectron Corp.（前身为ThermoFinnigan）Delta Plus XP SIRMS将配备连续流接口装置、自动进样能力、高温元素分析仪系统和顶空气体平衡系统。 新的SIRMS将补充部门内现有的SIRMS，包括Micromass Optima，Finnegan MAT 251和Micromass Isoprime稳定同位素质谱仪。 目前，这些质谱仪中没有一个被配置用于连续流操作，也没有配备高温热解系统。 新SIRMS上的连续流接口和高温热解系统将允许PI分析非常小的水样中硝酸盐、磷酸盐和硫酸盐的氧同位素组成（100微升），有机物微克样品的氧和氢同位素组成以及来自化石骨骼材料的生物磷灰石的氧同位素组成，从而为这一群体提供了依赖于过去环境和生态条件的稳定同位素代用品的古环境和古海洋学研究的新研究方向。 新的SIRMS将为八名教师和研究科学家及其学生提供服务，该气体源质谱仪的连续流动能力将使教师能够培训学生使用当今最新和最先进的仪器。***

0348970SperoThis grants supports acquisition of a new stable isotope ratio mass spectrometer (SIRMS) in the Department of Geology at the University of California Davis. A ThermoElectron Corp. (formerly ThermoFinnigan) Delta Plus XP SIRMS will be equipped with a continuous flow interface device, automated sample introduction capability, high temperature elemental analyzer system and headspace gas equilibration system. The new SIRMS will complement existing SIRMS within the department including a Micromass Optima, Finnegan MAT 251 and Micromass Isoprime stable isotope mass spectrometers. At present, none of these mass spectrometers is configured for continuous flow operation nor are they equipped with a high temperature pyrolysis system. The continuous flow interface and high temperature pyrolysis systems on the new SIRMS will allow the PI's to analyze the Oxygen isotopic composition of nitrate, phosphate and sulfate in very small water samples (100's of micro liters), the Oxygen and Hydrogen isotopic composition of micro gram samples of organics and the Oxygen isotopic composition of bioapatite from fossil skeletal materials, thereby affording this group new research directions in paleoenvironmental and paleoceanographic research that relies on stable isotopic proxies of past environmental and ecological conditions. The new SIRMS will serve eight faculty and research scientists and their students, The continuous flow capabilities of this gas source mass spectrometer will allow the faculty to train students on the newest and most advanced instrumentation available today. ***