Acquisition of a Gas Source Mass Spectrometer and Carbonate Preparation Device

购置气源质谱仪和碳酸盐制备装置

• 批准号: 0824978
• 负责人: James Zachos
• 金额: --
• 依托单位: University of California-Santa Cruz
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-10-01 至 2013-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0824978&HistoricalAwards=false
• 关键词: Acquisition; Gas; Source; Mass; Spectrometer

0824978ZachosThis proposal seeks funding for a new gas source dual-inlet isotope ratio mass spectrometer with a Kiel carbonate device. Requested is a Thermo MAT 253 with a Kiel IV prep device. The system will be capable of routine carbon and oxygen isotope analyses from carbonates with high precision and low sample size (~5 µg C). The acquisition will allow the use of individual acid reaction vessels, increasing precision and minimizing sample sizes. The instrument will add to existing analysis capability. General research themes outlined for the new instrumentation fall into the areas of paleoclimatology, paleoceanography and paleoecology. One focus is understanding the biogeochemistry and climate evolution of the late Cretaceous and early Cenozoic ?greenhouse? worlds; the causes and evolution of the Paleocene-Eocene Thermal Maximum (PETM). The PI intends to measure shell carbonates spanning the PETM in the fossil record. Shell analysis obviates artifacts due to sediment reworking or bioturbation, but requires low sample volumes. A related project will look at the coupling of biogeochemical cycling, including nutrients, and climatic forcings during the PETM. The instrument will also be applied to understanding paleoclimatic and paleoenvironmental forcings on the ecology, evolution of extant and ancient vertebrates (extinct). In addition, foraminiferal isotope analysis will be used to reconstruct paleoclimates associated with the Last Glacial Maximum (LGM). Aside from the PI and co-PI research thrusts, a number of other PIs at UCSC and elsewhere will be supported. The management plan has the new instrument replacing an Optima (which will be retired). No additional laboratory space will thus been needed. A lead technician and lab manager is currently employed and partial support is requested in Year 1. Zachos will oversee the installation and initial management of the Kiel IV device. It is expected that grant support and per-sample fees will support the facility long-term. The UCSC Stable Isotope Laboratory operates on an open access policy. This helps attract users from UCSC, other regional institutions and the international scientific community. Users have been roughly ~50% female. Recharge rates are kept low and the laboratory manager provides extensive training. UC-wide programs such as the California Alliance for Minority Participation ensures a diverse in-house user base.***

0824978 Zachos该提案旨在为一种带有基尔碳酸盐装置的新气源双入口同位素比质谱仪提供资金。要求使用带有基尔IV准备器械的Thermo MAT 253。该系统将能够以高精度和低样本量（~5 µg C）对碳酸盐进行常规碳和氧同位素分析。此次收购将允许使用单独的酸反应容器，提高精度并最大限度地减少样本量。该仪器将增加现有的分析能力。新仪器概述的一般研究主题属于古气候学、古海洋学和古生态学领域。重点之一是了解晚白垩世和早新生代的地球化学和气候演化。温室？世界;古新世-始新世热极大期（PETM）的原因和演化。PI打算测量化石记录中跨越PETM的贝壳碳酸盐。贝壳分析避免了由于沉积物改造或生物扰动造成的人为现象，但需要的样品量很小。一个相关的项目将研究古新世时期地球化学循环的耦合，包括营养和气候强迫。该仪器还将用于了解古气候和古环境对现存和古代脊椎动物（已灭绝）的生态、进化的影响。此外，有孔虫同位素分析将用于重建与末次盛冰期（LGM）有关的古气候。除了PI和co-PI的研究方向，UCSC和其他地方的一些其他PI也将得到支持。管理计划使用新仪器替换Optima（即将退役）。因此，不需要额外的实验室空间。目前雇用了一名首席技术员和实验室经理，并要求在第1年提供部分支持。Zachos将监督基尔IV设备的安装和初始管理。预计赠款支持和按样本收费将长期支持该设施。UCSC稳定同位素实验室实行开放获取政策。这有助于吸引来自UCSC、其他区域机构和国际科学界的用户。用户大约为50%的女性。充电率保持在较低水平，实验室经理提供广泛的培训。加州大学范围内的计划，如加州少数民族参与联盟，确保了多样化的内部用户群。