An Upgraded High Precision Stable Isotope System for Paleoenvironmental Applications

用于古环境应用的升级版高精度稳定同位素系统

• 批准号: RTI-2021-00275
• 负责人: Halverson, Galen
• 金额: $ 10.75万
• 依托单位: McGill University
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments
• 财政年份: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=718828
• 关键词: Upgraded; Precision; Stable; Isotope; System

This proposal request funding to upgrade a stable isotope mass spectrometry system in the Department of Earth and Planetary Sciences at McGill University. Stable isotope ratios are widely applied in the Earth sciences to reconstruct past environments. My research group applies multiple stable isotope systems, but the most central to our NSERC-supported research are the coupled carbon and oxygen isotope systems in carbonate minerals. As such, the mass spectrometry system in our laboratory, which is optimized for high-precision and high-sensitivity carbon and oxygen isotope analyses, is essential for our research. The data derived from this system are used to evaluate past temperatures, identify and quantity perturbations to the global carbon cycle, correlate and age-calibrate sedimentary carbonate successions, infer alteration of carbon sediments by diagenesis, and identify the effects of ocean acidification events in Earth's history, among other research topics. Carbon and oxygen isotope data on carbonates serve many other research programs as well, in particular in mineral exploration. As such, this instrument is heavily used. It is a key platform for training HQP and acquiring the required data for their research projects. Although the core of this instrument functions well, certain components, in particular the automated carbonate preparation device and the system for cryogenically removing water no longer function properly. The requested funding to replace and upgrade these components will maximize the potential of the mass spectrometry system to continue to acquire high quality isotopic data in support of my research program and the research of many HQP within the department.

该提案要求资金升级麦吉尔大学地球和行星科学系的稳定同位素质谱系统。稳定的同位素比在地球科学中广泛应用于重建过去的环境。我的研究小组应用了多个稳定的同位素系统，但是我们由NSERC支持的研究最重要的是碳酸盐矿物质中的碳和氧同位素系统。因此，我们的实验室中的质谱系统是针对高精度和高敏性碳和氧同位素分析进行​​了优化的，这对于我们的研究至关重要。从该系统中得出的数据用于评估过去的温度，识别和数量扰动全球碳循环，相关和年龄筛制的沉积碳酸盐词，通过成岩作用推断碳沉积物的改变，并确定海洋酸化事件在地球历史上的影响，以及其他研究主题。碳酸盐的碳和氧同位素数据也为许多其他研究计划服务，特别是在矿物勘探中。因此，该乐器被大量使用。它是培训HQP并获取其研究项目所需数据的关键平台。尽管该仪器的核心功能良好，但某些组件，尤其是自动化的碳酸盐制备设备和低温去除水的系统不再正常运行。替换和升级这些组件的要求的资金将最大程度地发挥质谱系统的潜力，以继续获取高质量的同位素数据，以支持我的研究计划和部门内许多HQP的研究。