Improved Community Capability to Measure Dissolved Organic Nitrogen in Seawater

提高社区测量海水中溶解有机氮的能力

• 批准号: 0082238
• 负责人: Jonathan Sharp
• 金额: $ 34.94万
• 依托单位: University of Delaware
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-09-01 至 2004-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0082238&HistoricalAwards=false
• 关键词: Improved; Community; Capability; Measure; Dissolved

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.

虽然许多实验室正在努力改进溶解有机氮（DON）分析和方法比较，但似乎表明不同的技术并不完全相同，但严重的精密度和准确度问题继续困扰着DON数据。 例如，来自各种经验丰富的科学家的DON测量表明，复制大约为25- 50%。 因此，PI建议协调一个大型国际分析师小组，以评价湿化学技术与高温燃烧（HTC）方法的有效性，并制定HTC方法的指导原则，用于使用参考标准进行常规分析，依赖于一小组专门从事测量类型的实验室的帮助。 然而，这项研究的主要目标将是编写和分发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。