Collaborative Research: Reno Atmospheric Mercury Inter-comparison Experiment

合作研究：里诺大气汞比对实验

• 批准号: 1101965
• 负责人: Anthony Hynes
• 金额: $ 14.2万
• 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: 2011
• 资助国家: 美国
• 起止时间: 2011-05-01 至 2013-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1101965&HistoricalAwards=false
• 关键词: Collaborative; Research; Reno; Atmospheric; Mercury

This collaborative award will support an inter-comparison of different measurement systems for atmospheric mercury (Hg). Hg is an important neurotoxin which bioaccumulates in the food chain. It is an important global pollutant and the atmosphere is a key site for processing and global transport. However, there are large uncertainties in our understanding of the atmospheric cycling of Hg, in part due to significant uncertainties in its measurement. The experimental campaign will occur during the summer of 2011 at a site in Reno Nevada that has previously been used for Hg research, and will involve four new measurement systems along with the traditional method system that is currently widely in use for Hg. The new methods will be compared and challenged using a carefully designed manifold for spiking and interference tests. The specific goals for this project are: (1) to compare ambient measurements of gaseous elemental mercury (GEM), gaseous oxidized mercury (GOM) and particulate mercury (PHg) by multiple groups for four weeks; (2) to examine the response of all systems to spikes of elemental Hg and mercury halides; (3) to examine the response to Hg of all systems in the presence of known or potential interfering compounds, including ozone, water vapor and other compounds; (4) to analyze the data to quantify the level of agreement and the results of interference and calibration tests for each measurement system; and (5) to publish the results in the peer-reviewed literature.This project is aimed at improving the measurement capabilities for a very important pollutant. The development and testing of better methods to measure Hg follows on the recommendations of several national assessments and an NSF supported workshop. This project will provide training opportunities for a number of undergraduates, graduate students and post-doctoral fellows.

该协作奖项将支持大气汞（HG）不同测量系统的相互比较。 HG是一种重要的神经毒素，可在食物链中生物盈利。 它是一个重要的全球污染物，气氛是处理和全球运输的关键场所。 但是，我们对汞的大气循环的理解有很大的不确定性，部分原因是其测量中的严重不确定性。实验运动将在2011年夏季在内华达州里诺（Reno Nevada）的一个地点进行，该地点以前已用于HG研究，并将涉及四个新的测量系统以及目前广泛用于HG的传统方法系统。 使用精心设计的尖峰和干扰测试的歧管，将比较并挑战新方法。 该项目的具体目标是：（1）比较气态元素汞（GEM），气态氧化汞（GOM）和颗粒汞（PHG）的环境测量值四个星期； （2）检查所有系统对元素HG和汞卤化物的尖峰的响应； （3）在存在已知或潜在干扰化合物（包括臭氧，水蒸气和其他化合物）的情况下检查所有系统对HG的响应； （4）分析数据以量化每个测量系统的一致性和干扰和校准测试的结果； （5）在同行评审的文献中发布结果。该项目旨在提高非常重要的污染物的测量能力。 根据几项国家评估和NSF支持的研讨会的建议，对更好的方法进行了更好的方法来测量HG。 该项目将为许多本科生，研究生和博士后研究员提供培训机会。