Petroleum hydrocarbons in sediments of Southampton water estuary |
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| Authors: | Anthony H Knap Peter J LeB Williams Elizabeth Lysiak |
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| Institution: | Bermuda Biological Station, St. George''s West, 1-15, Bermuda Great Britain;Department of Oceanography, The University, Southampton S09 5NH, Great Britain |
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| Abstract: | The sediments of Southampton Water were analysed for petroleum hydrocarbons to determine the fate of petrochemical refinery waste in the estuary. Much of the petroleum hydrocarbons appears to be removed by adsorption onto estuarine sediments close to source. Surface sediment concentrations range from 3·1mg/g dry weight near a refinery to 0·5 mg/g dry weight at locations distant from the refinery.The absence of any change with depth in total hydrocarbon concentrations from some sediment cores and the presence of distinct ‘oil’ horizons in others suggests that mixing of sediments in the area is very random. Sedimentation rates in areas where a distinct oil horizon was observed ranged from 1 to 3cm a year. |
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