Daily sampling of PM2.5 in Atlanta:: results of the first year of the assessment of spatial aerosol composition in Atlanta study -: art. no. 8415
Daily sampling of PM2.5 in Atlanta:: results of the first year of the assessment of spatial aerosol composition in Atlanta study -: art. no. 8415
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DOI：
10.1029/2002jd002234
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发表时间：
2003-01-10
影响因子：
4.4
通讯作者：
Russell, AG
中科院分区：
文献类型：
--
作者：
Butler, AJ;Andrew, MS;Russell, AG
1999年3月起，在佐治亚州亚特兰大市区建立了一个监测网络，对细颗粒物质量（PM2.5）及其成分进行了约一年的测量。年平均质量浓度范围为19.3 - 21.2微克/立方米，24小时最大浓度为44.3 - 51.5微克/立方米，1小时最大浓度为73.3 - 87.9微克/立方米。质量浓度峰值通常（但不总是）出现在塔克监测点，该点位于市中心东北偏东约12英里处。质量浓度随季节和一天中的时间变化显著。通过各种化学形态分析，约75%的质量得以确定。在可确定的部分中，含碳物质、硫酸盐、铵和硝酸盐是最主要的成分。
A monitoring network was established in metropolitan Atlanta, Georgia, to measure fine particulate mass (PM2.5) and composition for approximately one year, beginning in March 1999. Annual average mass concentrations ranged from 19.3-21.2 mug/m(3), maximum 24-hour concentrations were 44.3- 51.5 mug/m(3), and maximum 1-hour concentrations were 73.3-87.9 mug/m(3). Peak mass concentrations occurred typically (but not always) at the Tucker site, which was located approximately 12 miles ENE of downtown. Mass concentrations varied significantly with season and time of day. Approximately 75% of the mass was identified using various chemical speciation analyses. Of the identifiable portion, carbonaceous material, sulfate, ammonium, and nitrate were the largest constituents.