Trace metals in the common porpoise, Phocoena phocoena |
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| Authors: | CR Falconer IM Davies G Topping |
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| Institution: | DAFS, Marine Laboratory, PO Box 101, Victoria Road, AberdeenAB9 8DB, Scotland, Great Britain |
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| Abstract: | Mercury, cadmium, copper and zinc concentrations in brain, liver, kidney, heart and spleen of twenty-six specimens of the common porpoise (Phocoena phocoena) are presented. Mercury and cadmium levels in liver and kidneys tended to increase with length of animal, but copper and zinc levels show no such trends. The proportion of methylmercury to total mercury (9%–57%) in the liver decreased with increasing total mercury concentrations. Lead, chromium, nickel and cobalt levels were below the analytical detection limits (0·5, 1·0, 1·0 and 2·5 μg?1, respectively). |
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