Hydrocarbon concentrations in water and sediments from UK marine waters,determined by fluorescence spectroscopy |
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| Authors: | RJ Law |
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| Institution: | Ministry of Agriculture, Fisheries and Food, Directorate of Fisheries Research, Fisheries Laboratory, Burnham-on-Crouch, Essex CM0 8HA, UK |
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| Abstract: | Between January 1978 and September 1979 samples of subsurface (1 m) water and surface sediment were collected from sites in the North Sea, English Channel, Irish Sea and a number of estuarine areas. These have been analysed by fluorescence spectroscopy (UVF) in order to provide information on the levels of hydrocarbons generally present in UK marine waters.Total hydrocarbon concentrations (THCs) of water samples ranged from 1.1–74 μg l.?1 Ekofisk crude oil equivalents, all values greater than 3.5 μg l.?1 occurring inshore. In offshore areas the mean THCs were: 1.3 μg l.?1 in the northern North Sea, 1.5 μg l.?1 in the western Channel, 2.5 μg l.?1 in the eastern Channel and southern North Sea, and 2.6 μg l.?1 in the Irish Sea.THCs of sediment samples ranged from 0.27–340 μ g?1 dry weight Ekofisk crude oil equivalents, the highest concentration being in the Queen's Channel, the main entrance to the River Mersey. |
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