Trends in PM2.5 composition at the Department of Energy OST NETL fine particle characterization site in Pittsburgh, PA, USA
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- 作者：Modey ; William K. ; Eatough ; Delbert J.
- 关键词：PC-BOSS ; Diffusion denuder ; Fine particles ; Sulfate ; Semi-volatile organic compounds
- 刊名：Advances in Environmental Research
- 出版年：2003
- 出版时间：June, 2003
- 年：2003
- 卷：7
- 期：4
- 页码：859-869
- 全文大小：235 K
文摘
This paper reports on the results from the first 6 months (from November 1999 to April 2000) of an ongoing monitoring study of fine particulate air pollutants at the Department of Energy's Office of Science and Technology (OST) NETL sampling site, 30 km southwest of Pittsburgh city center, Pennsylvania. This study is part of a 2-year sampling program for PM characterization, under the auspices of The University Coal Research Program of the National Energy Technology Laboratory (NETL), US Department of Energy in Pittsburgh, PA, USA. Samples were collected daily with a Particle Concentrator-Brigham Young University Organic Sampling System (PC-BOSS) to determine PM2.3 composition, including the semi-volatile organic compounds (SVOC) and ammonium nitrate lost from particles during sampling. Average fine particulate composition during the 6-month period was: constructed PM2.3, 19.4 μgm−3; ammonium sulfate 4.3 μgm−3; non-volatile organic material, 6.9 μgm−3; elemental carbon, 0.4 μgm−3; SVOC lost from particles during sampling, 6.1 μgm−3; retained ammonium nitrate, 1.4 μgm−3; lost ammonium nitrate, 0.3 μgm−3. Results from the PC-BOSS sampler are also compared with those obtained from a Federal Reference Method PM2.5 sampler, and a Tapered Element Oscillating Microbalance monitor, both of which tended to not measure the semi-volatile particulate matter. SVOC concentrations were highest in the spring. Episodes of fine particulate non-volatile organic material occurred throughout the 6-month period. Average ammonium sulfate concentrations were higher in November and January than the other months for the study period.