Atmospheric particulate mercury in Changchun City,China |
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| Institution: | 1. College of Resources and Environment, Southwest University, Chongqing 400716, China;2. State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China;1. Department of Chemistry and Chemical Engineering, Chalmers University of Technology, SE-412 96 Göteborg, Sweden;2. IVL Swedish Environmental Research Institute, P.O. Box 53021, SE-400 14 Göteborg, Sweden;1. Department of Hydraulic Engineering, South China University of Technology, Guangzhou 510641, China;2. Guangzhou Marine Geological Survey, Guangzhou 510760, China;3. Key Laboratory of Marine Mineral Resources, Ministry of Land and Resources, Guangzhou 510760, China;4. School of Marine Sciences, Sun Yat-Sen University, Guangzhou 510275, China;5. Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Guangzhou 510275, China |
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| Abstract: | From July 1999 to January 2000, the total suspended particulate matter (TSP) in the atmosphere collected by high-volume sampler was used to determine the particulate Hg of four function districts and one contrast district in the City of Changchun,China. The study results indicated that the value of the volume-based concentration and the mass-based concentration of each district during the heating period are higher than those of the nonheating period. The volume-based concentration of the urban districts is higher than that of the contrast district. Atmospheric Hg concentrations varied temporally and spatially. TSP is the critical factor of particulate Hg concentration; precipitation is the main meteorological factor affecting Hg (p) concentration in the atmosphere; coal combustion and wind-blown soil material are the important sources of atmospheric particulate Hg. During heating period, the coal combustion makes a greater contribution to Hg(p) than that of wind-blown soil materials. |
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