Preparation, Certification and Distribution of Reference Materials for Dissolved Organic Carbon Analysis

溶解有机碳分析标准物质的制备、认证和分发

• 批准号: 1231431
• 负责人: Dennis Hansell
• 金额: $ 48.27万
• 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: 2012
• 资助国家: 美国
• 起止时间: 2012-09-01 至 2016-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1231431&HistoricalAwards=false
• 关键词: Preparation; Certification; Distribution; Reference; Materials

This award will fund a research group at the University of Miami to continue a consensus reference material (CRM) program that was first developed in 1999 in support of consistent, high-quality measurements of dissolved organic carbon (DOC) in seawater by the international ocean chemistry community. 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. Marine dissolved organic carbon measurements are made regularly at more than 50 laboratories in the United States, and at a greater number of laboratories in the rest of the world. Until this CRM program began distribution of reference materials, analyses made in these many laboratories were not linked by a common reference material and were, therefore, not comparable. Because there had not been an independent and common standard available, against which calibrations of individual analyses could be checked, there was little agreement amongst the majority of the laboratories making the measurements. Since the beginning of the program, ca. 110,000 ampoules of deep seawater and ca. 70,000 ampoules of low carbon water ampoules have been produced and distributed to 230 US and international laboratories in 36 nations. With renewal of the reference material program for a fifth 3-year period of support, deep ocean water containing ca. 40 umol C/kg of biologically refractory dissolved organic carbon and low carbon reference water will continue to be distributed to the marine biogeochemistry community. Broader Impacts: With continuation of this work the US and international communities will confidently produce consistent measurements of a major marine carbon reservoir, thereby advancing society's ability to assess changes in the marine carbon cycle and the role of the ocean in climate change. The principal investigator maintains a website that provides direct and convenient links to a growing number of DOM data collected from the global ocean (http://www.rsmas.miami.edu/groups/biogeochem/Data.html). As the CRM program has matured, a growing number of international laboratories are now able to provide high quality data to this repository. The principal investigator intends to pursue those data over the next 3 years, making them publicly available to the carbon community.

该奖项将资助迈阿密大学的一个研究小组继续开展一项共识参考材料（CRM）计划，该计划于1999年首次开发，旨在支持国际海洋化学界对海水中溶解有机碳（DOC）进行一致、高质量的测量。随着国际社会对海洋碳循环研究的持续努力，现有的CRM计划为全球可比的海洋DOC测量提供了必要的基准。美国有50多个实验室定期进行海洋溶解有机碳测量，世界其他地区有更多的实验室。在此CRM计划开始分发参考材料之前，这些实验室中进行的分析没有通过共同的参考材料联系起来，因此不具有可比性。由于没有一个独立和通用的标准，可以对照它检查单个分析的校准，大多数进行测量的实验室之间几乎没有一致意见。从节目开始，就。110，000安瓿的深层海水和大约。我们已经生产了70，000支低碳水安瓿，并分发给36个国家的230个美国和国际实验室。随着参考物质计划第五个3年支持期的延长，含有钙的深海水。将继续向海洋生物地球化学界分发40 umol C/kg的生物难降解溶解有机碳和低碳参考水。更广泛的影响：随着这项工作的继续，美国和国际社会将有信心对一个主要的海洋碳库进行一致的测量，从而提高社会评估海洋碳循环变化和海洋在气候变化中的作用的能力。 主要调查员维持一个网站，提供从全球海洋收集的越来越多的DOM数据的直接和方便的链接（http：//www.rsmas.miami.edu/groups/dumeochem/Data.html）。随着CRM计划的成熟，越来越多的国际实验室现在能够向该数据库提供高质量的数据。 首席研究员打算在未来3年内追踪这些数据，并将其公开提供给碳社区。