Distribution,sources and ecological risk assessment of PAHs in surface sediments from Guan River Estuary,China |
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| Affiliation: | 1. College of Environment, Hohai University, Nanjing 210098, China;2. Lianyungang Environmental Monitoring Central Station, Lianyungang 222001, China;3. Lianyungang Environmental Protection Bureau, Lianyungang 222001, China;4. College of Marine Science & Technology, Huaihai Institute of Technology, Lianyungang 222005, China;1. Institute of Environmental Pollution and Health, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China;2. School of Light Chemistry and Environmental Engineering, Qilu University of Technology, Jinan 250353, China;1. Key Laboratory of Marine Environmental Science and Ecology, Ministry of Education, Ocean University of China, Qingdao 266100, China;2. College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China;3. Qingdao Institute of Marine Geology, Qingdao 266071,China;1. South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China;2. State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography & Limnology, Chinese Academy of Science, Nanjing 210008, China;3. Graduate School of Chinese Academy of Science, Beijing 100049, China;4. Guangdong Provincial Key Laboratory of Fishery Ecology and Environment, Guangzhou 510300, China;5. Key Laboratory of South China Sea Fishery Resources Development and Utilization, Ministry of Agriculture, Guangzhou 510300, China;1. State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, 210008 Nanjing, China;2. Nanjing Forestry University, 210037 Nanjing, China;3. Institute of Urban Water Management, Technische Universität Dresden, 01062 Dresden, Germany;1. CAS Key Laboratory of Crust-Mantle and the Environment, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, Anhui, China;2. Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei 230031, China |
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| Abstract: | The contamination of surface sediments in Guan River Estuary, China, by polycyclic aromatic hydrocarbons (PAHs) has been fully investigated. Total concentrations of 21 PAHs ranged from 90 to 218 ng/g with an average of 132.7 ng/g, which is relatively low in comparison with other estuaries around the world. PAH concentrations appeared to be positively correlated with clay content and negatively correlated with sediment grain size. Source identification implied that the PAHs originated mainly from pyrolytic sources. However, source patterns may be continuously changed to a petrogenic origin due to the heavy ship traffic and continuous discharge of oily sewage in this area. The PAH levels were also compared with international Sediments Quality Guidelines and Sediments Quality Criteria, and the results indicated low negative effects for most individual PAHs. However, toxic effects related to FLO would occur occasionally in most locations in the estuary. |
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| Keywords: | PAHs Surface sediment Ecological risk Sediment quality guidelines Molecular ratios Guan River Estuary |
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