Improved Community Capability to Measure Dissolved Organic Nitrogen in Seawater

虽然许多实验室都在努力提高溶解有机氮（DON）的分析水平，并且方法比较表明，不同的技术并没有太大的差异，但严重的精度和准确性问题仍然困扰着DON数据。例如，来自不同经验丰富的科学家的DON测量表明，复制率为25-50%。出于这个原因，PI建议协调一大批国际分析人员来评估湿化学技术与高温燃烧（HTC）方法的有效性，并在一小群致力于测量类型的实验室的帮助下，利用参考标准制定HTC方法的常规分析指南。然而，这项研究的主要目的是编写和分发DON参考材料，供科学界广泛使用，并记录和评价其使用的影响。

ABSTRACTOCE-0082238Although efforts are being made in a number of laboratories to improve dissolved organic nitrogen (DON) analysis and method comparisons appear to show that different techniques are not too disparate, serious precision and accuracy problems continue to plague DON data. For example, DON measurements from various experienced scientists showed that replication is on the order of 25-50%. For this reason, the PI proposes to coordinate a large group of international analysts to evaluate the efficacy of the wet chemical technique versus the high temperature combustion (HTC) method and to develop guidelines for the HTC method for routine analysis using reference standards relying on help from a small group of laboratories dedicated to type of measurements. However, the primary objective of the study will be the preparation and distribution of DON reference materials for broad use by the scientific community and to document and evaluate the impact of their use.