A Stable Isotope Ratio Mass Spectrometer (SIRMS) for Carbonate-Based Paleoceanographic Studies at Brown University

prellaward将获得一台稳定同位素比质谱仪（SIRMS），该质谱仪将用于测量沉积物碳酸盐样品的氧和碳同位素，重点是测量来自海洋钻探计划（ODP）和其他沉积物岩心的样品，以解决古海洋学和古气候问题。这台仪器需要取代一台过时的、有14年历史的仪器，该仪器在通量和样本量要求方面受到限制，并且越来越不足以支持布朗大学一个活跃和不断增长的（在规模和研究方向上）地球系统历史小组的需求。被收购的SIRMS装置可能是Finnegan MAT252或Micromass Optima，具体型号将在稍后确定。这两种设备都将配备一个自动采样装置，用于在线制备和分析来自海洋碳酸盐沉积物的二氧化碳

OCE 99-86757PrellAward is for acquisition of a stable isotope ratio mass spectrometer (SIRMS) that will be dedicated to measuring oxygen and carbon isotopes of sediment carbonate samples, with a focus on measuring samples from Ocean Drilling Program (ODP) and other sediment cores that address paleoceanography and paleoclimate problems. This instrument is needed to replace an obsolete, 14-year-old instrument that is limited in throughput and sample size requirements, and increasingly inadequate to support the needs of an active and growing (in both size and research directions) Earth Systems History group at Brown University. The SIRMS unit to be acquired will likely be either a Finnegan MAT252 or a Micromass Optima, with the exact model to be determined later. Either device would be fitted with an auomated sampling device for on-line preparation and analysis of CO2 derived from marine carbonate sediments.***