Assessment of element concentrations in surface sediment samples from Sigacik Bay (eastern Aegean)

Authors : Ozde BAKAK, Filiz KÜÇÜKSEZGİN, Faik Erdeniz ÖZE

Pages : 1154-1166

View : 15 | Download : 4

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :Concentrations of Al, Fe, As, Co, Cr, Cu, Mn, Ni, Pb, Zn, Hg, and organic carbon, and grain size distribution were investigated in the surface sediments of 7 sampling stations in the Sigacik Bay insert ignore into journalissuearticles values(western Anatolia); in December 2016. At all of the sampling stations, the concentrations of Pb, Ni, Cr, and As were higher than the average shale values. The highest concentrations of Pb, Cu, Zn, As, and Hg were found at stations near Doganbey Cape. The possible sources of pollution were evaluated using several parameters: the enrichment factor insert ignore into journalissuearticles values(Et);, contamination factor insert ignore into journalissuearticles values(Cf);, and contamination degree insert ignore into journalissuearticles values(Cd);. The Ef values ranged between 0.12 and 7.61 in the bay. The high Ef insert ignore into journalissuearticles values(>1.5); values of Pb, Cu, Ni, Co, and As were assessed to explain the influence of anthropogenic sources. Additionally, the Cf values ranged from 0.46 to 5.61, while the Cd values ranged from 11.69 to 20.45 in the study area. The Cd of the Cr and As ranged between moderate and considerable, and the highest Cd was measured at stations near Doganbey Cape. Additionally, the pollution degrees were assessed using sediment quality guidelines insert ignore into journalissuearticles values(SQGs);, the threshold effect level insert ignore into journalissuearticles values(TEL);, the probable effect level insert ignore into journalissuearticles values(PEL);, the effects range low insert ignore into journalissuearticles values(ERL);, and the effects range median insert ignore into journalissuearticles values(ERM);. It was demonstrated that the sediments were generally heavily polluted with Cr and Ni, and moderately with Pb and Cu, according to the numerical SQGs. The concentrations of Pb, Cr, Cu, Zn, and Ni were above the TEL, while Cr and Ni were also higher than the PEL levels for all of the samples.
Keywords : Western Anatolia, Sığacık Bay, pollution, sediment quality, enrichment factor, contamination factor