Emergent Contaminants in Freshwater Ecosystem: A case study from Turkey

Authors : Ayhan FİLAZİ, Özgür KUZUKIRAN, Gülçin AKCA, Begüm YURDAKÖK DİKMEN, Selin ÖZKAN KOTİLOĞLU, Mahmut SELVİ, Figen ERKOÇ

Pages : 1-15

Doi:10.30607/kvj.1195207

View : 24 | Download : 8

Publication Date : 2023-03-31

Article Type : Research Paper

Abstract :The current study evaluated certain emerging contaminants in the Susurluk sub-basin, an area under significant anthropogenic pollution pressure. Polychlorinated biphenyls insert ignore into journalissuearticles values(PCBs);, polybrominated diphenyl ethers insert ignore into journalissuearticles values(PBDEs);, organochlorine insecticides, and microplastics were investigated both from surface and sediment samples collected in dry and wet seasons. γ-HCH and β-HCH were detected in the dry season from Kocaçay River reaching the Marmara Sea. Dieldrin concentrations were also very high in river sediments during the dry season. Nilüfer Stream is a significant waterway close to industrial and urban areas and under impact of pollution due to high concentrations of PCBs, DDT, and its’ metabolites. Sediment samples contained higher levels of contaminants: DDT and metabolites were found in sediments from almost all stations. According to the Hazard quotient coefficient, all detected pollutants were found to be >1, indicating a high risk in the river system. Fiber was the dominant microplastic. The water quality of Nilüfer Stream was poor/bad in quality both in dry and wet seasons, while Kocaçay River was moderate and poor/bad quality in dry and wet seasons, respectively. The findings of bacterial growth augmented and worsened water quality in the river basin with coliforms dominating, as assessed at the genus/species level and were very abundant. 
Keywords : Sucul kirleticiler, Fekal koliform, Mikroplastikler, Kalıcı organik kirleticiler, Susurluk Havzası, Su kalitesi