|
(W/EH080) Assessment of organotin pollution along the Polish Coast (Baltic Sea) by using mussels and fish as sentinel organisms. Albalat, Amaya 1, Potrykus, Joanna2, Kopecka, Justyna2, Pempkowiak, Janusz2, Porte, Cinta1, 1 2 ABSTRACT- Levels of tributyltin (TBT) and its degradation products, mono- (MBT) and dibutyltin (DBT) as well as triphenyltin (TPhT) were monitored in biota samples collected along the Polish coast. Mussel, -Mytilus trossulus- and fish, -Platychthys flessus- were used as sentinel organisms. Butyltin compounds were detected in all the sampled stations. Among them, mussels from Gdansk Bay showed the highest butyltin residues (68 ng g-1 wet wt as Sn) with elevated TBT/DBT ratios. The lowest butyltin level (3 ng g-1 wet wt as Sn) was recorded outside the bay. Additionally, flatfish were sampled in Gdansk Bay - the most polluted area - and different tissues (liver, digestive tube and gills) were analyzed separately. TPhT although not detected in mussels was always present in fish. The highest organotin concentration was observed in the liver (369 ng g-1 wet wt as Sn) of fish from Westerplatte, near Gdansk port. The ingest of organotin contaminated food appears to be an important uptake pathway of organotin compounds in Platychthys flessus. Key words: organotin compounds (MBTMISSING CHARACTER ENTITY: comma DBTMISSING CHARACTER ENTITY: comma TBTMISSING CHARACTER ENTITY: comma TPhT), mussels, fish, bioaccumulation, Southern Baltic Sea |
