Distributions and Sources of PAHs and OCPs in Surficial Sediments of Edremit Bay (Aegean Sea)

Darılmaz E., Alyürük H., Kontas A., Altay O., Uluturhan E., Bilgin M.

ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY, vol.77, no.2, pp.237-248, 2019 (SCI-Expanded) identifier identifier identifier


In this study, levels, distributions, and sources of polycyclic aromatic hydrocarbons (18 compounds) and organochlorine pesticides (19 compounds) in surface sediments of 14 stations from Edremit Bay (Aegean Sea) were investigated in April and November 2015. Sigma PAH concentrations (0.65-175ng/g) in Edremit Bay sediments indicated low pollution. Sigma PAH levels were decreased in the order of inner (81.1 +/- 47.0ng/g), northern (48.4 +/- 15.9ng/g), and southern (19.0 +/- 15.8ng/g) bays. p,p'-DDE was the only organochlorine pesticide detected in Edremit Bay sediments and found between nd to 1.16ng/g dw. According to sediment quality guidelines, PAHs and p,p'-DDE levels in Edremit Bay were below the threshold effect level, effect range low, and threshold effect concentration limits and the sediments have no potential ecological risks. Two- to 3-ring PAHs were found at higher levels than 4- to 5-ring PAHs. Molecular PAHs ratios and Principal Component Analysis-Multiple Linear Regression analyses indicated combustion of wood-coal and vehicle emissions might have contributed to PAH levels in the bay.