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Trace Metals in Sediment 
It should be noted that the elevated 
concentrations for indium, cadmium, 
and lead in the sediment were also 
found in the area N-4. This could 
indicate a special situation of sources 
in this area, based also on the eleva- 
ted concentrations in water. However, 
it should be noted that the elevated 
concentrations were only for lead spo- 
radically above the known variability of 
the German Bight. The causes cannot 
yet be clearly identified.