Wintertime size distribution of polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs) and organochlorine pesticides (OCPs) in the urban environment: Street- vs rooftop-level measurements |
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| Authors: | Loukia P Chrysikou Panagiotis G Gemenetzis Constantini A Samara |
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| Institution: | 1. State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan, 430074, China;2. Department of Atmospheric Science, School of Environmental Studies, China University of Geosciences, Wuhan, 430074, China;3. Department of Environmental Science and Engineering, School of Environmental Studies, China University of Geosciences, Wuhan, 430074, China;4. Zhanjiang Environmental Protection Monitoring Station, Zhanjiang, 524002, China;1. Environmental Declaration Office, Korea Environmental Industry & Technology Institute, Seoul, 03367, South Korea;2. Department of Environmental Science and Engineering, Ewha Womans University, Seoul 03760, South Korea;3. Air Quality Research Division, National Institute of Environmental Research, Seoul 03367, South Korea;4. Department of Environmental Health, Seoul National University, Seoul 08826, South Korea;5. Department of Chemical Engineering and Materials Science, Ewha Womans University, Seoul 03760, South Korea;6. Department of Environmental Engineering, Chosun University, Gwangju 61452, South Korea;1. Laboratory of Biochemistry, Department of Chemistry, Aristotle University of Thessaloniki, GR 54124, Thessaloniki Greece;2. Environmental Pollution Control Laboratory, Department of Chemistry, Aristotle University of Thessaloniki, GR 54124, Thessaloniki Greece;1. Department of Geography, Key Laboratory of Geo-information of the Ministry of Education, East China Normal University, Shanghai 200062, China;2. Anhui Key Laboratory of Natural Disasters Process and Prevention, College of Territorial Resource and Tourism, Anhui Normal University, Wuhu 241003, China;3. College of Urban and Environmental Sciences, Yancheng Teachers University, Yancheng 224051, China |
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| Abstract: | The size distribution of ambient air particles and associated organic pollutants, such as polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), and organochlorine pesticides (OCPs) including hexachlorocyclohexanes (HCHs), DDT and metabolites, etc., was investigated at a traffic-impacted site of Thessaloniki, Greece. Investigation took place during wintertime of 2006 at two heights above ground: at the street level (1.5 m) and at the rooftop level (15 m). Size-resolved samples (<0.95 μm, 0.95–1.5 μm, 1.5–3 μm, 3–7.5 μm and >7.5 μm) were concurrently collected from the two height levels using five-stage high volume cascade impactors. At both heights, particle mass exhibited bimodal distribution with peaks in the 0.95–1.5 μm and the 3–7.5 μm size fractions, whereas most organic pollutants exhibited one peak at 0.95–1.5 μm. Apart from the 0.95–1.5 μm fraction, particle concentrations of all size ranges were significantly higher at the street level than at the rooftop as a result of more intensive vehicular emissions and road dust resuspension. On the contrary, the concentrations of most organic pollutants did not differentiate significantly between the two elevations. |
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