Characterization of polycyclic aromatic hydrocarbons deposition in PM2.5 and cloud/fog water at Mount Taishan (China) |
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| Authors: | Peng-hui Li Yan Wang Yu-hua Li Zai-feng Wang Hou-yong Zhang Peng-ju Xu Wen-xing Wang |
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| Affiliation: | 1. Department of Knowledge-Based Mathematical Systems, Johannes Kepler University Linz, Austria;2. Software Research Center, Paris Lodron University Salzburg, Austria;3. i-RED Infrarot Systeme GmbH, Linz, Austria;4. Dynea Austria GmbH, Krems, Austria;5. Recendt GmbH, Linz, Austria;1. Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China;2. Institute of Surface-Earth System Science, Tianjin University, Tianjin 300072, China;3. Division of Environment and Sustainability, The Hong Kong University of Science and Technology, Hong Kong, China;4. Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong, China;5. Chubu Institute for Advanced Studies, Chubu University, Kasugai 487-8501, Japan;6. College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100049, China;7. School of Environmental Science and Engineering, Shandong University, Jinan 250100, China |
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| Abstract: | Polycyclic aromatic hydrocarbons (PAHs) in PM2.5 and cloud/fog water samples were collected at Mount Taishan in an autumn–winter period, and were analyzed by GS-MS. Higher molecular weight PAHs (4–6 rings) predominated in PM2.5 samples, whereas lighter PAH compounds contributed 61.71% of the total PAH concentration in cloud/fog samples. Particles tended to contain more PAHs and have a more intensive influence on the atmospheric environment on colder days. During cloud/fog events, the scavenging ratio based on PAHs associated with particles was estimated to be about 13.45%. PAHs in PM2.5 samples had a significant positive relationship with CO and SO2, suggesting that PAHs, SO2, and CO may originated from the same sources, such as residential coal combustion activities. Diagnostic ratio analysis and factor analysis indicated that the sources of PAHs were mainly from coal combustion during this period. |
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