Analytically Correct Measurements of Dissolved Organic Matter in Seawater

小行星9633296 近年来，海洋化学家们逐渐认识到溶解有机碳（DOC）和溶解有机氮（DON）分别占海洋环境中总有机碳和总氮的重要部分。甚至在这一点被发现之前，这些科学家也意识到，由不同实验室分析相同的海水样本的DOC和DON通常会产生不同的结果。 在NSF赞助的前四年的研究中，主要研究者建立了海水标准参考物质和DOC的实验室间交叉比较。在这个项目中，他将继续非常成功的DOC海水标准计划，并为DON建立一个类似的标准化和相互校准项目。预计这项工作将有助于使一些实验室的分析实践符合标准，以便能够收集高质量的全球DOC/DON数据集，用于全球范围的海洋碳和氮循环以及海洋化学-气候关系的研究。

9633296 Sharp In recent years marine chemists have come to realize that dissolved organic carbon (DOC) and dissolved organic nitrogen (DON) may account for a significant portion of the total organic carbon and nitrogen respectively in the marine environment. Even before this was known, these scientists also realized that identical seawater samples analyzed by different laboratories for DOC and DON often, if not usually, yield disparate results. In four previous years of NSF-sponsored research, the principal investigator established a seawater standard reference material and an interlaboratory cross-comparison for DOC. In this project, he will continue the very successful DOC seawater standards program at a reduced level and establish a similar standardization and intercalibration project for DON. This work is expected to help bring substandard analytical practices in some laboratories into line so that global DOC/DON datasets of high quality can be assembled for use in global-scale studies of (for example) marine carbon and nitrogen cycling and ocean chemistry-climate relationships.