Americas Program: Receptor Modeling of Atmospheric Deposition at the Great Lakes Integrated Atmospheric Deposition (IADN) Stations

9600384兰德斯伯格这个美洲项目奖将资助伊利诺伊大学厄巴纳-香槟分校的Sheldon Landsberger博士前往加拿大进行一项关于五大湖中有毒物质大气沉积的研究。他的合作者将是加拿大大气环境服务(AES)的雷蒙德·迈耶·霍夫博士。其主要目标是开发一个关于美国-加拿大大气沉积综合网络收集的空气样本的多元素数据集。美洲反兴奋剂机构在每个五大湖上都有站点，以估计从大气到五大湖的有毒物质，包括痕量金属的总体区域输入。提出了一个化学分析和受体模拟程序，其中在IADN站点获得的样品将被用来估计五大湖中痕量元素的来源和来源/地区，以及特定城市地区对空气颗粒物成分的影响。近几十年来，大湖区大气中许多有毒微量元素的浓度急剧上升，对公众健康和环境构成了潜在威胁。来自大城市地区顺风向大气中的有毒物质沉积是对湖泊的潜在重要投入，机构间发展网络尚未解决这一问题。拟议的研究将通过源-受体颗粒分布建模程序直接解决这一问题。***

9600384 Landsberger This Americas Program award will fund travel expenses to Canada for Dr. Sheldon Landsberger, University of Illinois, Urbana-Champaign, to conduct a study on the atmospheric deposition of toxic materials in the Great Lakes. His collaborator will be Dr. Raymond Meyer Hoff, of the Atmospheric Environment Service (AES) of Canada. The main objective is to develop a multi-element data set on air samples collected by the U.S.-Canada Integrated Atmospheric Deposition Network (IADN). The IADN has stations on site on each of the Great Lakes to provide an estimate of overall regional inputs of toxic materials, including trace metals, from the atmosphere to the Lakes. A program of chemical analysis and receptor modeling is proposed in which samples obtained at the IADN sites will be used to estimate the sources and source/regions of trace elements deposition in the Great Lakes, and the effects of specific urban areas on the airborne particulate matter compositions. The atmospheric concentrations of many toxic trace elements in the Great Lakes area has risen dramatically in recent decades to the point where they pose a potential threat to public health and the environment. Atmospheric deposition of toxic materials downwind from large urban areas is a potentially important input to the Lakes which has not been addressed by the IADN. The proposed research will directly address this problem through a source-receptor modeling program for particle-size distribution. ***