Emergent Contaminants in Freshwater Ecosystem: A case study from Turkey

The current study evaluated certain emerging contaminants in the Susurluk sub-basin, which is under significant anthropogenic pollution pressure. Polychlorinated Biphenyls (PCBs), polybrominated diphenyl ethers (PBDEs), organochlorine insecticides, and microplastics were investigated from both surface sediment samples collected dry wet seasons. In Kocaçay river reaching Marmara Sea, γ-HCH β-HCH detected season. Dieldrin was also observed very high concentrations sediments during Nilüfer stream a waterway close to industrial urban areas resulting of PCBs, DDT, its metabolites. Sediment contained higher contaminants: DDT metabolites almost all stations. According Hazard quotient coefficient, pollutants found be >1, indicating risk system. Fiber dominant microplastic. water quality Stream poor/bad seasons, while River moderate respectively. findings bacterial growth augmented worsened basin with coliforms dominating, as assessed at genus/species level abundant.