Varol Memet, Ustaoğlu Fikret, Tokatlı Cem
Malatya Turgut Özal University, Doğanşehir Vahap Küçük Vocational School, Department of Aquaculture, Malatya, Turkey.
Biology Department, Faculty of Arts and Science, Giresun University, Güre, Giresun, Turkey.
Environ Res. 2022 Apr 1;205:112478. doi: 10.1016/j.envres.2021.112478. Epub 2021 Dec 1.
The evaluation of trace elements (TEs) in sediments of dam lakes is crucial for maintaining ecosystem health. Therefore, it is very important to determine their concentrations, pollution status, sources, controlling factors and ecological risks in these ecosystems. Here, for the first time, we analyzed 14 TEs (Al, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Cd, Sb, Hg and Pb) and sediment properties (organic matter (OM) and pH) in sediments from four dam lakes (Erfelek, Derbent, Suat Uğurlu and Saraydüzü) in the Black Sea Region of Turkey, which are used for different purposes and located on the different rivers or streams with different pollution levels. The results indicated that Al, V, Mn, Fe, Cu, Zn, As, Pb and Sb concentrations were lower in the Erfelek Dam Lake which has been used for drinking water supply, indicating that it is more protected than other dam lakes. However, Al, V, Mn, Fe, Co, Cu and Sb concentrations were higher in the Suat Uğurlu Dam Lake on the Yeşilırmak River which is moderately polluted. According to sediment contamination indices, there was low contamination in the sediments of all dam lakes. Similarly, the assessment of ecological risk posed by TEs indicated low eclogical risk in the dam lakes. Sediment OM and pH were found to be important control factors affecting the distribution of TEs in the dam lakes sediments. Correlation and factor analyses suggested that all TEs in the sediments of dam lakes mainly originated from geogenic sources.
评估坝湖沉积物中的微量元素对于维护生态系统健康至关重要。因此，确定这些生态系统中微量元素的浓度、污染状况、来源、控制因素和生态风险非常重要。在此，我们首次分析了土耳其黑海地区四个坝湖（埃尔费莱克、杰尔宾特、苏阿特·乌古鲁和萨拉伊迪祖）沉积物中的14种微量元素（铝、钒、铬、锰、铁、钴、镍、铜、锌、砷、镉、锑、汞和铅）以及沉积物性质（有机质（OM）和pH值），这些坝湖用途不同，位于不同污染程度的不同河流或溪流上。结果表明用于饮用水供应的埃尔费莱克坝湖中的铝、钒、锰、铁、铜、锌、砷、铅和锑浓度较低，这表明它比其他坝湖受到更好的保护。然而，在受中度污染的耶希尔河上的苏阿特·乌古鲁坝湖中的铝、钒、锰、铁、钴、铜和锑浓度较高。根据沉积物污染指数，所有坝湖的沉积物污染程度较低。同样，对微量元素造成的生态风险评估表明坝湖的生态风险较低。发现沉积物中的有机质和pH值是影响坝湖沉积物中微量元素分布的重要控制因素。相关性和因子分析表明，坝湖沉积物中的所有微量元素主要源自地质来源。
