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

1126627 AufdenkampeThis重大研究仪器补助金支持在斯特劳德水研究中心（SWRC）购买高灵敏度稳定同位素比质谱仪（Delta V加上Conflo IV通用接口）。 新的仪器将提供增强的能力和更大的灵敏度分析比目前在SWRC。 新的IRMS系统将用于几个资助项目，其总体目标是利用氢、氮、氧和碳稳定同位素来跟踪土壤和河流环境中的有机物质循环。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动。这些测量数据将有助于建立动态数学模型，描述养分通过地表水文过程的移动、数量和质量以及转化。将促进与参与NSF资助的环境生物学长期研究（LTREB）站点和区域临界区观测站（CZO）的区域科学家合作进行的研究。

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.***