title: Levels, distribution, and sources of polychlorinated biphenyls in sediments of Lake Eymir, Turkey.
abstract: Little information is available on the occurrence and fate of persistent organic pollutants in lakes of Turkey. The present study was performed as a first step to assess the occurrence, spatial distribution, and potential sources of polychlorinated biphenyls (PCBs) in surface sediments of Lake Eymir located in a special protection area. Σ41PCB concentrations range from 1.09 to 2.33 ng g(-1) in 62 sediment samples collected from the lake. The spatial homogeneity of the PCBs along the whole lake suggests the resuspension or redistribution of historic PCB contamination. A chemical mass balance (CMB) receptor model was used to identify the possible sources of PCBs, for which a limited number of congeners are available for modeling purposes. Results indicated Clophen A60 to be the major PCB source in lake sediments. CMB analysis also showed the importance of a number of compounds used for the assessment of source contributions.
authors.affiliation: Department of Environmental Engineering, Middle East Technical University, 06531 Ankara, Turkey.
authors.forename: Kadir
authors.initials: K
authors.lastname: Gedik
authors.forename: Ipek
authors.initials: I
authors.lastname: Imamoğlu
mesh_terms: D004784:Environmental Monitoring; D019015:Geologic Sediments / Q000737:chemistry*; D060106:Lakes / Q000737:chemistry*; D011078:Polychlorinated Biphenyls / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000737:chemistry*
chemical_list: D014874:Water Pollutants, Chemical; D011078:Polychlorinated Biphenyls