Harmful Element Content Of The Ankara Stream Bed Sedıments

The study aimed to interpret the abundanceand provenance of harmful elements in the bed sediments of the Ankara Stream. Average Zn, Ni, Cu, Pb, As, Co and Cd values in the Ankara Stream sediments are calculated as 111, 65.7, 32, 17.6, 16.4, 16.1 and 0.2 ppm, respectively. The Al/Si ratio of the examined samples exhibit a positive correlation with Cu, Pb, Ni and Co, and TOC content of the examined samples shows a positive correlation with Cu, Pb ve Zn. The EF and Igeovalues indicated that the sediments were significantly polluted by As and Ni and generally moderately polluted by Co, Zn, and Cu, and locally moderately polluted by Pb and Cd.Pb anthropogenic contribution was estimated at an average of >100% in the sediments.Therefore, Pb, Cu, Zn, and Co elements are generally geologically sourced and there is locally an anthropogenic contribution. Cadmium is mostly anthropogenic but partly a geological contribution, but it is thought that Ni and As are completely anthropogenic sourced.