LIQUID-SOLID PHASE EXTRACTION OF WATER SAMPLES USED FOR TOXICITY TESTING IN THE GERMAN BIGHT

During the Bremerhaven Workshop, a liquid-solid enrichment technique was used to extract lipophilic organic compounds from seawater. The toxicity of extracts was tested after dilution with seawater corresponding to different enrichment factors. Using a hydroid bioassay, extracts from the more inshore areas proved significantly more toxic compared to those from the more offshore locations. Methodological aspects of this type of toxicity testing are discussed.