Long-range transport of polycyclic aromatic hydrocarbons from China to Japan |
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| Institution: | 1. Department of Occupational and Environmental Health, Peking University School of Public Health, Beijing 100871, China;2. Key Laboratory of Molecular Cardiovascular Sciences of Ministry of Education, Peking University, Beijing 100871, China;3. Institute of Earth and Environment, Chinese Academy of Sciences, Xi''an 710061, China;1. Centre for Environmental and Marine Studies, Department of Environment, University of Aveiro, 3810-193 Aveiro, Portugal;2. Dep. of Physics and Astronomy, Università di Firenze and INFN-Firenze, Sesto Fiorentino 50019, Italy;3. National Centre for Scientific Research (NCSR) “Demokritos”, 15341 Ag. Paraskevi, Attiki, Greece;4. Institute of Environmental Assessment and Water Research, Spanish Research Council, C/Jordi Girona, 08034 Barcelona, Spain;5. Institute of Geography and Geoecology, Karlsruhe Institute of Technology (KIT), Reinhard-Baumeister-Platz 1, 76131 Karlsruhe, Germany;6. Organic Geochemistry Unit (OGU), School of Chemistry, University of Bristol, Cantock''s Close, Bristol BS8 1TS, UK;7. Institute of Geography & Oeschger Centre for Climate Change Research, University of Bern, Hallerstrasse 12, 3012 Bern, Switzerland |
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| Abstract: | Airborne particulate matter was collected at Wajima, on the Noto Peninsula, Ishikawa, Japan by a high-volume air sampler with a quartz filter every week from 17 September 2004 to 16 September 2005. Polycyclic aromatic hydrocarbons (PAHs) extracted from filters were analyzed by HPLC with fluorescence detection. The atmospheric concentrations of PAHs at Wajima were higher during the heating period of China (when coal is burned for heat) than during the no-heating period. A meteorological analysis indicated that the air samples collected in that heating period at Wajima were transported mainly from Northeast China over the Japan Sea. Principal component analysis of nine PAHs indicated a Chinese origin of the PAHs. These results strongly suggest that the high-level PAHs detected at Wajima were the result of long-range transport from China. |
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