Lead isotope geochemistry of the urban environment in the Pearl River Delta |
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| Institution: | 1. School of Environment, Beijing Normal University, Beijing 100875, China;2. MNR Key Laboratory of Marine Eco-Environmental Science and Technology, First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China;3. College of Water Science, Beijing Normal University, Beijing 100875, China;4. Advanced Interdisciplinary Institute of Environment and Ecology, Beijing Normal University, Zhuhai 519087, China;1. Byrd Polar and Climate Research Center, The Ohio State University, 1090 Carmack Road, Columbus, OH 43210-1002, USA;2. School of Earth Sciences, 275 Mendenhall Laboratory, The Ohio State University, 125 South Oval Mall, Columbus, OH 43210, USA |
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| Abstract: | The study of the Pb isotopic and elemental composition of eolian dusts, aerosols and soils collected from urban areas in the Pearl River Delta, China, indicates that the atmospheric Pb pollution originates from automobile exhausts and industry. The Pb isotopes allow distinguishing between Pb from the natural background, automobile exhausts, and industrial pollution. The Pb isotopes show that the air-carried Pb pollution in Guangzhou and Foshan is a mixture of industrial Pb from the Fankou Pb-Zn giant deposit and automobile exhaust, whereas the pollution in Foshan is mainly from industry. The chemical compositions show that aerosols possess features of volcanic ash, and eolian dusts are mixtures of aluminosilicates-sulfides. |
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