Airborne particle PM2.5/PM10 mass distribution and particle-bound PAH concentrations near a medical waste incinerator |
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| Institution: | 1. Institute of Environmental Health Sciences, College of Medicine, National Yang-Ming University, Taipei 112, Taiwan;2. General Education Center, ToKo University, Chia-Yi County, Taiwan;1. Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, Nanjing University of Information Science and Technology, Ningliu Road 219, Nanjing, China;2. College of Environmental Science and Engineering, Nankai University, Weijin Road 94, Tianjin, China;3. College of Environmental Science and Engineering, North China Electric Power University, Baoding, China;4. Chinese Research Academy of Environmental Sciences, Beijing 100012, China;1. Centre for Tropical Climate Change System (IKLIM), Institute for Climate Change, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia;2. School of Environmental and Natural Resource Sciences, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia;3. School of Industrial Technology (Environmental Division), Universiti Sains Malaysia, 11800 Penang, Malaysia;4. Environmental Health and Industrial Safety Program, School of Diagnostic Science and Applied Health, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300 Kuala Lumpur, Malaysia;5. Environmental Research Group, School of Marine Science and Environment, Universiti Malaysia Terengganu, 21030 Kuala Terengganu, Terengganu, Malaysia;1. Research Department, Fundação Estadual de Proteção Ambiental Henrique Luis Roessler, Rua Borges de Medeiros 261/9 Andar, 90020-021, Porto Alegre, RS, Brazil;2. Postgraduate Program in Remote Sensing and Meteorology, Geosciences Institute, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 9500, 91501-970, Porto Alegre, RS, Brazil;1. Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, Nanjing University of Information Science and Technology, Nanjing 210044, China;2. Department of Atmospheric Physics, Nanjing University of Information Science and Technology, Nanjing 210044, China;3. Jiangsu Institute of Meteorological Sciences, Nanjing 210008, China;1. School of Human Settlements and Civil Engineering, Xi''an Jiaotong University, Xi''an, China;2. Key Lab of Aerosol Chemistry & Physics, Institute of Earth Environment, Chinese Academy of Sciences, Xi''an, China;3. State Key Lab of Loess and Quaternary Geology (SKLLQG), Institute of Earth Environment, Chinese Academy of Sciences, Xi''an 710061, China;4. Division of Atmosphere Sciences, Desert Research Institute, Reno, NV89512, United States;5. The Jockey Club School of Public Health and Primary Care, The Chinese University of Hong Kong, Hong Kong, China;6. Department of Environmental Sciences and Engineering, Xi''an Jiaotong University, Xi''an, China;7. University of Chinese Academy of Sciences, Beijing 100049, China;8. Institute of Global Environmental Change, Xi''an Jiaotong University, Xi''an, China;1. Indira Gandhi Delhi Technical University for Women, New Delhi, 110006, India;2. National Physical Laboratory, Council of Scientific and Industrial Research (CSIR), New Delhi, 110012, India |
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| Abstract: | This study attempts to determine the influence of air quality in a residential area near a medical waste incineration plant. Ambient air concentrations of polycyclic aromatic hydrocarbons (PAHs), PM10 and PM2.5 (PM—particulate matter) were determined by collecting air samples in areas both upwind and downwind of the plant. The differences in air pollutant levels between the study area and a reference area 11 km away from the plant were evaluated.Dichotomous samplers were used for sampling PM2.5 and PM10 from ambient air. Two hundred and twenty samples were obtained from the study area, and 100 samples were taken from a reference area. Samples were weighed by an electronic microbalance and concentrations of PM2.5 and PM10 were determined. A HPLC equipped with a fluorescence detector was employed to analyze the concentrations of 15 PAHs compounds adsorbed into PM2.5 and PM10.The experimental results indicated that the average concentrations of PM2.5 and PM10 were 30.34±17.95 and 36.81±20.45 μg m?3, respectively, in the study area, while the average ratio of PM2.5/PM10 was 0.82±0.01. The concentrations of PM2.5 and PM10 of the study area located downwind of the incinerator were significantly higher than the study area upwind of the incinerator (P<0.05).The concentration of PAHs in PM2.5 in the study area was 2.2 times higher than in the reference area (P<0.05). Furthermore, the benzo(a)pyrene concentrations in PM2.5 and PM10 were 0.11±0.05 ng m?3 and 0.12±0.06 ng m?3 in the study area, respectively. The benzo(a)pyrene concentrations of PM2.5 and PM10 in the study area were 7 and 5.3 times higher than in the reference area (P<0.05), respectively.The study indicated that the air quality of PM2.5, PM10 and PAHs had significant contamination by air pollutants emitted from a medical waste incineration factory, representing a public health problem for nearby residences, despite the factory being equipped with a modern air pollution control system. |
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