RESULTS

Method, Laboratory Study and Field Study

e The researchers developed and validated
 reliable methods to analyse trace
metals in water, sediment and biota

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e In the laboratory, they characterised the
chemical composition of various sacrificial
 anodes. This enabled the researchers
 to identify the most critical components
 for the environment as well as
possible tracers for chemical emissions
from the corrosion protection of offshore
installations.

e The team carried out several field studies
 in the North Sea to generate for the
first time a comprehensive data set on
the occurrence and distribution of trace
metals around offshore wind farms
(in water and in sediment).

e The measured concentrations of selected
 elements in water and in sediment
are largely within the normal variability
of the German Bight (see Table 1 and 2
in Appendix).

e Elevated concentrations of aluminium,
zinc, indium, gallium (in water) and lead
(in sediment) were sporadically detected.

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