Capacity: FSML: Acquisition of an Isotope Ratio Mass Spectrometer with liquid chromatography and elemental analyzer interfaces at the Skidaway Institute of Oceanography

该合同为斯基德韦海洋研究所(SKIO)购买稳定的同位素比质谱仪系统提供资金。这些仪器是海洋科学和生态领域的主要设备，因为它们提供了对理解食物网、营养和碳源以及碳循环等主题至关重要的数据。这种新的仪器对样品大小的要求比它要更换的设备低得多，并允许在我们的设施中进行新的硫同位素测量。综合起来，这些改进将使SKIO的科学家和学生能够在更精细的空间和时间分辨率下进行研究。这种新仪器也是通过进行动手实验和快速分析数据来培训本科生和研究生进行稳定同位素分析的理想工具。SKIO的稳定同位素设施是此类分析的区域中心，虽然通常的做法是向用户收取费用，以收回消耗品的成本，但以这种方式积累的资金的10%将用于向本科生机构和区域团体提供免费分析和数据解释。通过这种方式，更广泛的学生将获得该领域和一般生态海洋科学研究的直接经验。该项目提供资金购买能够测量碳、氮、氧和硫同位素的Thermo Delta Q Light稳定同位素质谱仪。两个样品处理接口，一个LC-Isolink II和一个经过Nano-EA修改的元素分析仪(EA)，取代了旧的和不受支持的接口。新的LC界面将用于支持目前和未来在溶解有机物循环和组成以及海洋碳循环方面的研究。新的EA将提供新的研究方向，包括使用单个微型浮游动物测量的食物网络研究和对高效液相分离株的化合物特异性分析。该设施为主要在佐治亚州海岸进行研究的用户群提供快速反应测量，并向来自南美和欧洲的科学家和学生提供服务。新工具的半自动性质为学生培训和研究提供了极好的机会，因此留出了资金和工具时间，供服务不足的团体和机构使用。生物基础设施部的这一奖项得到了海洋科学部地球科学理事会的支持。这一奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。

This award provides funds to purchase a Stable Isotope Ratio Mass spectrometer system at the Skidaway Institute of Oceanography (SkIO). Such instruments are workhorse devices in the Marine science and Ecology fields, as they provide data crucial to understanding such subjects as food webs, nutrient and carbon sources, and carbon cycling. This new instrumentation has significantly lower sample size requirements than the equipment it is replacing, and allows for new measurements of sulfur isotopes at our facility. Together these improvements will allow scientists and students at SkIO to conduct research at finer spatial and temporal resolutions. The new instrument is also ideal for training students, both undergraduate and graduate, in stable isotope analyses by conducting hands on experiments and analyzing their data in rapid fashion. SkIO’s stable isotope facility is a regional hub for such analyses, and while normal practice is to charge users to recover costs for expendables, 10% of the funds accrued in this manner will be used to provide no-cost analyses and data interpretation to undergraduate institutions and regional groups. In this manner a broader range of students will gain direct experience in this field and in ecological marine science studies in general.This project provides funds to purchase a Thermo Delta Q Light Stable isotope Mass Spectrometer capable of Carbon, Nitrogen, Oxygen and Sulfur Isotope measurements. Two sample processing interfaces, a LC-Isolink II and an elemental analyzer (EA) with Nano-EA modifications, replace older and non-supported interfaces. The new LC interface will be used to support ongoing and future studies in dissolved organic matter cycling and composition as well as oceanic carbon cycling. The new EA will provide for new research directions, including food web studies using individual micro-zooplankton measurements and compound-specific analyses on HPLC isolates. The facility provides rapid-response measurements to a user base primarily conducting research along the Georgia coast and has also provided services to scientists and students from South America and Europe. The semi-automated nature of the new instruments allows for excellent opportunities for student training and research, therefore funds and instrument time have been set aside for access by underserved groups and institutions. This award by the Division of Biological Infrastructure is supported by the Directorate for Geosciences, Division of Ocean Sciences.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.