Investigations on the pollution of Istanbul Strait (Bosphorus) by M/S Rab Union-18 sunk with live sheep
Türkan Yurdun, Ferda Kaleağasıoğlu, Kasım C. Güven, Bayram Öztürk
Istanbul Regional Hygienic Institute, Zeytinburnu, Istanbul, TURKEY
Institute of Oncology , University of Istanbul, 34390 Çapa, Istanbul, TURKEY
Institute of Marine Sciences and Management, University of lstanbul, 34470 Vefa, Istanbul, TURKEY
Faculty of Aquatic Products University of Istanbul, Beyazıt, Istanbul, Turkey, TURKEY
M/S Rab Union-18 that contained twenty thousand live sheep sunk in Istanbul Strait (Bosphorus) on 14 Nov. 1991. To determine the polution following this accident, sea water samples were collected from different regions at 20 m depths in the vicinity. The samples were Lyophilised and then subjected to chemical and biotoxicity-analysis. In thin-layer chromatographic analysis, the deterioration products were detected by p-dimethylaminobenza ldehyde and ninhydrine reagents. Biotoxicity was investigated by Artemia salina Leach Biolethality Assay. The samples in which protein degradation was detected did not demonstrate any sign of biotoxicity. Due to hypoxia some marine organisms such as; Phycis sp, Gobius spp. Mullus surmuletus, M . barbatus, Rapana venosa, Mytilus galloprovincialis ve Crangon crangon were totally dead. Furthermore dissolved O2 level was measured 2 mg/L and water transperency value was found 0.5 meter.
Keywords: M/S Rab-Union, thin-layer chromatography, Biolethality assay, hypoxia