| Evaluation of butyl rubber as sorbent material for the removal of oil and polycyclic aromatic hydrocarbons from seawater D Ceylan, S Dogu, B Karacik, SD Yakan, OS Okay, O Okay Environmental science & technology 43 (10), 3846-3852, 2009 | 347 | 2009 |
| Polycyclic aromatic hydrocarbons (PAHs) and polychlorinated biphenyls (PCBs) distributions in the Bay of Marmara sea: Izmit Bay F Telli-Karakoç, L Tolun, B Henkelmann, C Klimm, O Okay, KW Schramm Environmental Pollution 119 (3), 383-397, 2002 | 192 | 2002 |
| The pollution status and the toxicity of surface sediments in Izmit Bay (Marmara Sea), Turkey LG Tolun, OS Okay, AF Gaines, M Tolay, H Tüfekçi, N Kıratlı Environment International 26 (3), 163-168, 2001 | 126 | 2001 |
| PCB and PCDD/F in sediments and mussels of the Istanbul strait (Turkey) OS Okay, B Karacık, S Başak, B Henkelmann, S Bernhöft, KW Schramm Chemosphere 76 (2), 159-166, 2009 | 118 | 2009 |
| Polycyclic aromatic hydrocarbons and effects on marine organisms in the Istanbul Strait B Karacık, OS Okay, B Henkelmann, S Bernhöft, KW Schramm Environment international 35 (3), 599-606, 2009 | 111 | 2009 |
| The role of algae (Isochrysis galbana) enrichment on the bioaccumulation of benzo [a] pyrene and its effects on the blue mussel Mytilus edulis OS Okay, P Donkin, LD Peters, DR Livingstone Environmental Pollution 110 (1), 103-113, 2000 | 103 | 2000 |
| Polycyclic aromatic hydrocarbon contamination in coastal sediments of the Izmit Bay (Marmara Sea): Case studies before and after the Izmit Earthquake L Tolun, D Martens, OS Okay, KW Schramm Environment international 32 (6), 758-765, 2006 | 82 | 2006 |
| Water concentrations of PAH, PCB and OCP by using semipermeable membrane devices and sediments B Karacık, OS Okay, B Henkelmann, G Pfister, KW Schramm Marine Pollution Bulletin 70 (1-2), 258-265, 2013 | 64 | 2013 |
| İzmıt Bay (Turkey) Ecosystem after Marmara Earthquake and Subsequent Refinery Fire: the Long-term Data OS Okay, L Tolun, F Tellı-Karakoç, V Tüfekçı, H Tüfekçı, E Morkoç Marine Pollution Bulletin 42 (5), 361-369, 2001 | 60 | 2001 |
| Towards a clean Izmit Bay E Morkoç, OS Okay, L Tolun, V Tüfekçi, H Tüfekçi, T Legoviç Environment international 26 (3), 157-161, 2001 | 60 | 2001 |
| Toxicity of 2, 4-D acid to phytoplankton OS Okay, A Gaines Water Research 30 (3), 688-696, 1996 | 47 | 1996 |
| Environmental impact of land-based pollutants on Izmit Bay (Turkey): short-term algal bioassays and simulation of toxicity distribution in the marine environment OS Okay, T Legović, V Tüfekçi, L Egesel, E Morkoç Archives of Environmental Contamination and Toxicology 31, 459-465, 1996 | 42 | 1996 |
| Performance of anaerobic sequencing batch reactor in the treatment of pharmaceutical wastewater containing erythromycin and sulfamethoxazole mixture S Aydin, B Ince, Z Cetecioglu, EG Ozbayram, A Shahi, O Okay, O Arikan, ... Water science and technology 70 (10), 1625-1632, 2014 | 39 | 2014 |
| Metals in the surface sediments of Istanbul Strait (Turkey) OS Okay, H Pekey, E Morkoc, S Başak, B Baykal Journal of Environmental Science and Health Part A 43 (14), 1725-1734, 2008 | 39 | 2008 |
| Effects of pyrene on mussels in different experimental conditions OS Okay, L Tolun, V Tüfekçi, F Telli-Karakoç, P Donkin Environment international 32 (4), 538-544, 2006 | 38 | 2006 |
| The changes of T-PAH levels and health status of mussels in Izmit bay (Turkey) after Marmara earthquake and subsequent refinery fire OS Okay, L Tolun, F Telli-Karakoç, V Tüfekçi, H Tüfekçi, A Olgun, ... Environment International 28 (8), 671-675, 2003 | 38 | 2003 |
| Organic and heavy metal pollution in shipbreaking yards A Yılmaz, B Karacık, SD Yakan, B Henkelmann, KW Schramm, OS Okay Ocean Engineering 123, 452-457, 2016 | 34 | 2016 |
| Acute and chronic toxicity of pyrene to the unicellular marine alga Phaeodactylum tricornutum. OS Okay, V Tüfekçi, P Donkin Bulletin of Environmental Contamination & Toxicology 68 (4), 2002 | 34 | 2002 |
| Heavy metal pollution in sediments and mussels: assessment by using pollution indices and metallothionein levels OS Okay, M Ozmen, A Güngördü, A Yılmaz, SD Yakan, B Karacık, B Tutak, ... Environmental monitoring and assessment 188, 1-18, 2016 | 33 | 2016 |
| Micro-organic pollutants and biological response of mussels in marinas and ship building/breaking yards in Turkey OS Okay, B Karacık, A Güngördü, M Ozmen, A Yılmaz, NC Koyunbaba, ... Science of the Total Environment 496, 165-178, 2014 | 33 | 2014 |
