Effects of varying estuarine conditions on the sorption of phenanthrene to sediment particles of Yangtze Estuary |
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| Institution: | 1. State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Beijing Normal University, Beijing 100875, China;2. State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China;1. School of Life Science and Agriculture and Forestry, Qiqihar University, No. 42 Wenhua Street, Jianhua District, Qiqihar 161006, China;2. School of Resource and Environment, Northeast Agricultural University, No. 59 Mucai Street, Xiangfang District, Harbin 150030, China;3. Longjiang Environmental Protection Group Co., LTD, No. 368 Changjiang Road, Nangang District, Harbin, 150000, China;1. Mines Douai, LGCGE-GCE, F-59508, Douai, France;2. Univ. Lille, F-59500, Lille, France;3. LASIR UMR CNRS 8516, University Lille 1 Sciences and Technologies, Villeneuve d''Ascq, France;1. Istituto Nazionale di Oceanografia e di Geofisica sperimentale - OGS, Borgo Grotta Gigante 42/c, 34010 Sgonico, Trieste, Italy;2. Università degli Studi di Trieste, Piazzale Europa, 1, 34128 Trieste, Italy;3. Aix-Marseille Université, CNRS/INSU, IRD, MIO, UM 110, 13288, Marseille, Cedex 9, France;4. Université de Toulon, CNRS/INSU, IRD, MIO, UM 110, 83957, La Garde, France;1. Centre for Research in Environmental, Coastal & Hydrological Engineering, School of Engineering, University of KwaZulu-Natal, Durban 4041, South Africa;2. School of Life Sciences, University of KwaZulu-Natal, Durban 4041, South Africa;1. College of Marine and Environmental Sciences, Tianjin University of Science and Technology, Tianjin, 300457, PR China;2. Tianjin Key Laboratory of Marine Resources and Chemistry, Tianjin University of Science and Technology, Tianjin, 300457, PR China;3. Jiaozhou Bay National Marine Ecosystem Research Station, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, PR China;4. Fishery Resources and Ecological Environment Research Department, Tianjin Bohai Sea Fishery Research Institute, Tianjin, 300270, PR China |
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| Abstract: | The sorption of phenanthrene on the Yangtze Estuary sediment was studied under varying conditions of particle size, sediment organic contents, salinity, and dissolved organic matter (DOM) concentrations. Small sediment particles showed higher trapping capacity for phenanthrene due to the higher organic contents associated. The organic carbon-based partition coefficient of phenanthrene to the Yangtze Estuary sediment was obtained as 7120 L/kg, lower than the values for other soils or sediments reported in previous studies. The magnitude and direction of the salt effect were complicated by the specific DOM studied. The sediment sorption capacity was greatly increased in saline water in the absence of DOM but decreased in the presence of DOM. Given the conditions in the Yangtze Estuary, the equilibrium sorption of phenanthrene would be decreased with increasing salinity. Overall, the nature and content of both sediment-bound and dissolved organic matter dominate the sorption of hydrophobic organic contaminants in the estuary. |
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| Keywords: | Hydrophobic organic contaminant Partition coefficient Sediment size fraction Sediment organic matter Salting constant |
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