Source apportionment of fine particulate matter (PM2.5) at a rural Ohio River Valley site |
| |
| Institution: | 1. Aix Marseille Université, CNRS, LCE FRE 3416, 13331 Marseille, France;2. French Environment and Energy Management Agency, 20 avenue du Grésillé-BP, 90406 49004 Angers Cedex 01, France;3. NERC Centre for Ecology and Hydrology (CEH) Edinburgh, Bush Estate, EH26 0QB, Penicuik, United Kingdom;4. Institute of Environmental Assessment and Water Research, IDÆA-CSIC, 08034 Barcelona, Spain;5. ARPA Veneto, Via Lissa 6, 30171 Mestre-Venice, Italy;6. University of Western Macedonia, Department of Mechanical Engineering, Environmental Technology Laboratory, Sialvera & Bakola Street, 50100 Kozani, Greece.;7. Environmental Research Laboratory, Institute of Nuclear and Radiological Sciences & Technology, Energy & Safety, National Centre for Scientific Research “Demokritos”, 15310 Ag. Paraskevi, Athens, Greece;8. Dipartimento di Fisica and INFN, via Dodecaneso 33, 16146 Genova, Italy;9. AirPACA, Air Quality Observatory in Provence Alpes Côte d''Azur, Marseille, France;10. Univ. Grenoble Alpes, CNRS, LGGE, F-38000 Grenoble, France;1. School of Environment and Safety, Taiyuan University of Science and Technology, Taiyuan, China;2. Chinese Research Academy of Environmental Sciences (CRAES), Ministry of Environment Protection (MEP), Beijing, China;3. College of Environmental Sciences and Engineering, Peking University, Beijing, China;4. School of Earth and Atmospheric Science, Georgia Institute of Technology, Atlanta, GA, USA |
| |
| Abstract: | Twenty four-hour averaged concentrations of fine particulate matter were collected at Athens, OH between March 2004 and November 2005 in an effort to characterize the nature of PM2.5 and apportion its sources. PM2.5 samples were chemically analyzed and positive matrix factorization was applied to this speciation data to identify the probable sources. PMF arrived at a 7-factor model to most accurately apportion sources of the PM2.5 observed at Athens. Conditional probability function (CPF) and potential source contribution function (PSCF) were applied to the identified sources to investigate the geographical location of these sources. Secondary sulfate source dominated the contributions with a total contribution of 62.6% with the primary and secondary organic source following second with 19.9%. Secondary nitrate contributed a total of 6.5% with the steel production source and Pb- and Zn-source coming in at 3.1% and 2.9%, respectively. Crustal and mobile sources were small contributors (2.5% each) of PM2.5 to the Athens region. The secondary sulfate, secondary organic and nitrate portrayed a clear seasonal nature with the sulfate and secondary organic peaking in the warm months and the nitrate reaching a high in the cold months. The high percentage of secondary sulfate observed at a rural site like Athens suggests the involvement of regional transport mechanisms. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
