Vertical profiles of trace metals and acid-volatile sulphide in a dynamic sedimentary environment: Lake Ketel,The Netherlands |
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| Institution: | 1. Institute for Inland Water Management and Waste Water Treatment (RIZA), Van Leeuwenhoekweg 20, 3316 AV Dordrecht, The Netherlands;2. National Institute of Public Health and the Environment (RIVM), PO Box 1, 3720 BA Bilthoven, The Netherlands;1. Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia (UTM), 81310 Johor Bahru, Johor, Malaysia;2. School of Chemical Sciences, Univeristy Sains Malaysia, 11800 Minden, Pulau Pinang, Malaysia;3. School of Chemical Sciences & Food Technology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia;4. Department of Physics, Faculty of Science, Universiti Teknologi Malaysia (UTM), 81310 Johor Bahru, Johor, Malaysia;1. Division of Engineering Science, University of Toronto, Toronto, Ontario, M5S 1A4, Canada;2. Green Energy and Environmental Laboratories, Industrial Technology Research Institute, Hsinchu, 310, Taiwan;3. Department of Aeronautics and Astronautics, National Cheng Kung University, Tainan, 701, Taiwan;1. School of Engineering, University of KwaZulu-Natal, Howard College Campus, Durban, South Africa;2. NIBIO, Norwegian Institute of Bioeconomy Research, Norway;3. School of Chemistry and Physics, University of KwaZulu-Natal, Howard College Campus, Durban, South Africa;4. SIMBIOS Centre, Abertay University of Dundee, Bell Street, Dundee, Scotland, UK;5. Population Health Sciences Division, School of Medicine, University of Dundee, Dundee DD2 4BF, Scotland, UK |
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| Abstract: | Fine-scale solid-phase trace metal and acid-volatile sulphide profiles are presented for sediment cores taken at four locations in Lake Ketel, a dynamic sedimentation basin of the river Rhine in The Netherlands. The purpose of this study was to relate these profiles to the dynamics of sediment transport in the lake. The internal cycling of solids in the lake affects the distribution of trace metals and acid-volatile sulphide in the sediments. Comparison of vertical profiles of trace metals and sulphide indicates significant spatial variation in the dynamics of sediment transport in Lake Ketel. The construction of a dredge spoil storage depot in 1996 seems to have significantly influenced the hydrodynamic and sediment dynamics in Lake Ketel. Consequently, deposition rates in Lake Ketel based on comparison of solid-phase trace metal concentrations in the sediments and historical levels in Rhine suspended matter can only be used as rough estimates. |
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