SGER: Development of New Method for Black Carbon Nano-Particles in Seawater

SGER：开发海水中黑碳纳米颗粒的新方法

• 批准号: 0753637
• 负责人: Peter Edwards
• 金额: --
• 依托单位: Nevada System of Higher Education, Desert Research Institute
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-12-15 至 2009-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0753637&HistoricalAwards=false
• 关键词: SGER; Development; New; Method; Black

The PIs have requested a Small Grant for Exploratory Research (SGER) to develop a new analytical method for rapidly quantifying black carbon (BC) nano-particles in seawater. The proposal is based on the PIs recent success in developing a new method for BC in freshwater using a nebulization introduction system and a single particle intra-cavity laser induced incandescence soot photometer.Little is known regarding BC nano-particles, produced by incomplete combustion, in seawater. These nano-particles are now believed to be an important component of the global carbon cycle, the hydrologic cycle, global warming, and marine chemistry and geochemistry. Recent studies suggest that BC is an important component of seawater and marine sediments and that BC may represent a significant fraction of the dissolved organic carbon pool. Because of the extreme analytical challenges associated with its analysis, very little is known regarding the distribution of BC in the ocean. Broader ImpactsThis project has the potential to open up a whole new sub-discipline of marine chemistry and change our understanding of the connection between the terrestrial and oceanic biosphere. The results of the project will have wide-ranging impacts on the global Earth Science community and will employ an undergraduate student. The PI will communicate the results to the scientific community through high visibility publications and public meetings.

PIs已经申请了一笔探索性研究（SGER）的小额赠款，用于开发一种新的分析方法，用于快速定量海水中的黑碳（BC）纳米颗粒。该建议是基于PIs最近成功地开发了一种新的方法，在淡水中使用雾化引入系统和单粒子腔内激光诱导白炽灯烟灰光度计。对于在海水中不完全燃烧产生的BC纳米颗粒，人们知之甚少。这些纳米颗粒现在被认为是全球碳循环、水文循环、全球变暖以及海洋化学和地球化学的重要组成部分。最近的研究表明，BC是海水和海洋沉积物的重要组成部分，并且BC可能代表了溶解有机碳库的重要部分。由于与分析相关的极端分析挑战，人们对BC在海洋中的分布知之甚少。更广泛的影响这个项目有可能开辟海洋化学的一个全新的分支学科，并改变我们对陆地和海洋生物圈之间联系的理解。该项目的成果将对全球地球科学界产生广泛的影响，并将雇用一名本科生。PI将通过高知名度的出版物和公开会议将结果传达给科学界。