MRI: Acquisition of a High-Sensitivity Light Stable Isotope Ratio Mass Spectrometer for Critical Zone Studies

MRI：购买高灵敏度光稳定同位素比质谱仪用于关键区域研究

• 批准号: 1126627
• 负责人: Anthony Aufdenkampe
• 金额: $ 31.3万
• 依托单位: Stroud Water Research Center
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-09-01 至 2014-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1126627&HistoricalAwards=false
• 关键词: MRI; Acquisition; Sensitivity; Light; Stable

1126627 AufdenkampeThis Major Research Instrumentation grant supports acquisition of a high-sensitivity stable isotope ratio mass spectrometer (Delta V plus with Conflo IV universal interface) at the Stroud Water Research Center (SWRC). The new instrumentation will provide enhanced capabilities and greater sensitivity analyses than currently available at the SWRC. The new IRMS system will be put to use in several funded projects with the overall goal of exploiting hydrogen, nitrogen, oxygen and carbon stable isotopes to track organic matter cycling in soils and stream environments. Natural abundance measurements and heavy isotope tracers will be used to track energy and carbon flow in stream ecosystems. Data from these measurements will support the development of dynamic mathematical models describing the movement, quantity and quality and transformation of nutrients through surface earth hydrological processes. Studies in collaboration with regional scientists engaged in NSF-funded Long Term Research in Environmental Biology (LTREB) sites and a regional Critical Zone Observatory (CZO) will be facilitated.***

1126627 aufdenkame这项主要研究仪器拨款支持在斯特劳德水研究中心（SWRC）购买一台高灵敏度稳定同位素比质谱仪（Delta V +与Conflo IV通用接口）。与目前的SWRC相比，新的仪器将提供增强的能力和更高的灵敏度分析。新的IRMS系统将在几个资助项目中使用，其总体目标是利用氢、氮、氧和碳的稳定同位素来跟踪土壤和河流环境中的有机质循环。自然丰度测量和重同位素示踪剂将用于跟踪河流生态系统中的能量和碳流。来自这些测量的数据将支持动态数学模型的发展，这些模型描述了地表地球水文过程中营养物质的运动、数量和质量以及转化。与参与美国国家科学基金会资助的环境生物学长期研究（LTREB）站点和区域关键带观测站（CZO）的区域科学家合作进行的研究将得到促进