Determination of Metal Concentrations in Değirmendere Stream Drainage Area of Southeastern Black Sea Coast of Turkey

Abstract

B u çalışmanın amacı Güneydoğu Karadeniz'in Türkiye kıyılarında denize boşalan Değirmendere deresinin drenaj alanında sedimentteki metal derişimlerinin ve zenginleşme düzeylerinin belirlenmesidir. Çalışmada 5 ayrı istasyondan üç arklı mevsimde yüzey sediment örnekleri Ekman Grap kullanılarak alınmıştır.

Spatial distribution of trace elements and potential contamination sources for surface sediments of the North-Western Black Sea, Romania

“…They assumed that As, Cu, Hg, Pb, and Zn originated from mining wastewater, Pb and Zn from motor vehicle emissions, Cu, Pb, and Zn from sewage discharge, industrial inputs, and surface runoff, and Ni from natural sources. The mean values of Cu and Zn reported by Gedik and Boran (2013) and Alkan et al (2021) were significantly higher than those reported in our study, whereas the levels of Pb were similar. Bakan and Özkoç(2007) evaluated the impact of anthropogenic activities on the accumulation of some elements in surface sediments of the middle Turkish coast.…”

“…The contamination status of surface sediments was evaluated based on the contamination factor (CF), which was determined using Equation 1, where E is the element (Al, As, Cr, Cu, Hg, Ni, Pb, and Zn) concentration in the sample and E b the background element concentration (Håkanson, 1980). Mean values of shale element concentrations reported by Turekian and Wedepohl (1961) (Al b = 8% = 80000 mg/kg, As b =13 mg/kg, Cr b = 90 mg/kg, Cu b = 45 mg/kg, Hg b = 0.40 mg/kg, Ni b = 68 mg/kg, Pb b = 20 mg/kg, and Zn b = 95 mg/kg) were used as background values, according to other studies on the element distribution in the Black Sea (Gedik and Boran, 2013;Alkan et al, 2021;Özsȩker et al, 2022). The contamination status of sediments based on CF values is as follows: low contamination for CF < 1, moderate contamination for 1 ≤ CF < 3, considerable contamination for 3 ≤ CF < 6, and very high contamination for CF ≥ 6 (Håkanson, 1980).…”

“…Moreover, agrochemicals are important sources of Cu, Pb, and Zn. Alkan et al (2021) and Gedik and Boran (2013) determined element concentrations in surface sediments of the eastern Turkish coast of the Black Sea. Alkan et al (2021) examined surface sediment samples (0-5 cm depth) collected in 2018 from 5 stations located in the drainage area of the Degȋrmendere Stream.…”

“…Alkan et al (2021) and Gedik and Boran (2013) determined element concentrations in surface sediments of the eastern Turkish coast of the Black Sea. Alkan et al (2021) examined surface sediment samples (0-5 cm depth) collected in 2018 from 5 stations located in the drainage area of the Degȋrmendere Stream. Factor analysis suggested that As, Cr, Cu, and Ni came predominantly from stream discharges, whereas port activities were main sources of Pb and Zn.…”