ABSTRACT

In this study, Çubuk 2, Kesikköprü and Asartepe Dam Lake, were investigated. A total of 60 sediment samples were collected and the concentrations of 10 elements (Cu, Pb, Zn, Ni, Mn, Fe, Co, Cr, Al, As) were determined. The obtained findings were compared to the limit values for the sediment quality guidelines (SQGs) and were investigated using sediment assessment methods. The results indicate that the values for SQGs revealed that the concentrations of Ni and As should be emphasised. Toxic unit (TU) values showed that As and Ni together constitute 69.95–80.09% of the total toxic effect alone for all lakes. In addition, the Contamination factor (Cf) and Enrichment factor (EF) detected the concentration of As for Kesikköprü Dam Lake as being at a medium and higher accumulation levels, although the Geoaccumulation index (Igeo) detected that As leads to contamination below the medium level. When the total element accumulation was evaluated, no risk was detected for the lakes. Cluster analysis (CA) revealed quite different elemental profiles for 3 lakes. The strongest correlation between the elements was observed for Cu-Ni (r = 0.942) in Çubuk 2, whereas Çubuk 2 was the lake with the highest seasonal elemental variation among the lakes investigated.

摘要

在这项研究中，对Çubuk 2、Kesikköprü 和Asartepe Dam Lake 进行了调查。共收集了 60 个沉积物样品，测定了 10 种元素（Cu、Pb、Zn、Ni、Mn、Fe、Co、Cr、Al、As）的浓度。将获得的结果与沉积物质量指南 (SQG) 的限值进行比较，并使用沉积物评估方法进行调查。结果表明，SQG 的值表明应该强调 Ni 和 As 的浓度。毒性单位 (TU) 值表明，砷和镍合计占所有湖泊总毒性效应的 69.95-80.09%。此外，污染因子 (Cf) 和富集因子 (EF) 检测到 Kesikköprü Dam Lake 的 As 浓度处于中等和较高的积累水平，尽管地累积指数 (Igeo) 检测到 As 导致低于中等水平的污染。在评估总元素积累时，没有发现湖泊的风险。聚类分析 (CA) 揭示了 3 个湖泊完全不同的元素剖面。在 Çubuk 2 中观察到 Cu-Ni (r = 0.942) 元素之间的最强相关性，而 Çubuk 2 是调查的湖泊中季节性元素变化最高的湖泊。