Preparation and Distribution of DOC Consensus Reference Materials

DOC 共识参考材料的准备和分发

• 批准号: 1844886
• 负责人: Dennis Hansell
• 金额: $ 49.36万
• 依托单位: University of Miami
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-04-01 至 2023-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1844886&HistoricalAwards=false
• 关键词: Preparation; Distribution; DOC; Consensus; Reference

Dissolved organic carbon (DOC) in the ocean is part of the global carbon cycle. DOC interacts with the Earth's climate system through its connection to carbon dioxide in the atmosphere. Keeping track of DOC requires the cooperation of many marine laboratories worldwide. Making sure that all of these laboratories are making accurate DOC measurements requires that each can access a standardized sample of seawater for which the DOC concentration is set by international agreement. This award funds the University of Miami to continue a consensus reference material (CRM) program that was first developed in 1998 in support of consistent, high quality measurements of dissolved organic carbon by the international ocean chemistry community. With continuation of this work, the US and international communities can make consistent measurements of a major marine carbon reservoir and advance society's ability to assess changes in the marine carbon cycle and the role of the ocean in climate change.With continued strong international efforts to investigate the marine carbon cycle, the existing CRM program provides the necessary benchmark for globally comparable marine DOC measurements. Water from the deep Florida Strait (approximately 42 umol/kg DOC) will be collected, placed in ampoules, and distributed to the US and international community. Over the time period of this program, approximately 228,000 vials of reference waters have been distributed to approximately 240 US and international laboratories in 43 nations, currently at a rate of about 23,000 vials/year. With continuation of the reference material program for a seventh 3-year period of support, distribution of deep ocean water containing biologically refractory dissolved organic carbon and low carbon reference water will continue to aid the analytical work of the community studying dissolved organic matter in the ocean. A website is maintained that provides direct and convenient links to a growing number of DOC data collected from the global ocean.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.

海洋中溶解有机碳(DOC)是全球碳循环的一部分。DOC通过与大气中二氧化碳的连接与地球气候系统相互作用。跟踪DOC需要世界各地的许多海洋实验室的合作。要确保所有这些实验室都进行准确的DOC测量，需要每个实验室都能获得国际协议规定的DOC浓度的标准化海水样本。该奖项资助迈阿密大学继续开展一项共识参考材料(CRM)计划，该计划于1998年首次开发，旨在支持国际海洋化学界对溶解有机碳进行一致、高质量的测量。随着这项工作的继续，美国和国际社会可以对一个主要的海洋碳库进行一致的测量，并提高社会评估海洋碳循环变化和海洋在气候变化中作用的能力。随着国际社会继续大力研究海洋碳循环，现有的客户关系管理计划为全球可比较的海洋DOC测量提供了必要的基准。来自佛罗里达海峡深处的水(约42umol/kg DOC)将被收集，放置在安瓶中，并分发给美国和国际社会。在该计划实施期间，已向43个国家和地区的约240个美国和国际实验室分发了大约228,000瓶参考水，目前的速度约为23,000瓶/年。随着标准物质计划的第七个三年支持期的继续，含有生物难溶有机碳的深海水和低碳参考水的分布将继续帮助研究海洋中溶解有机物的社区的分析工作。维护了一个网站，提供直接和方便的链接，链接到从全球海洋收集的越来越多的DOC数据。该奖项反映了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。