Investigation of Toxic Metal Contamination in Water and Sediments of G？lba？？ Lake (Ad？yaman)

G？lba？？ Lake, which forms the most important wetland between the Mediterranean Region and the Southeastern Anatolia Region, is a natural lake and protected as a natural park. Excessive grazing causes damage to the vegetation around the villages and makes the area vulnerable to erosion. Increased agricultural production in the region has also brought pollution problems. Measures must be taken for the sustainability of water and sediment quality of this lake which is from our natural wetlands. For this purpose, in this study, water quality of G？lba？？ Lake and heavy metal rezidues in water and sediment were evaluated. Water and sediment sampling were carried out in two periods, dry (August 2017) and wet (November 2017). Ammonia, nitrite, nitrate, phosphate and biological oxygen requirement values of water quality parameters were examined. Residue quantities of heavy metals such as Pb, Cu, Zn, As, Cr and Cd have been evaluated in lake water. In the lake sediment, 12 types of metal (Pb, Cu, Zn, As, Cr, Cd, Ni, Se, Co, Fe, Al and Mn) were analyzed. G？lba？？ Lake was found to be in the first class according to the classifications of the water quality, physicochemical parameters and elements of Continental Water Surface Water Resources. In general, sediment metal remains are in the order of Fe？Al？Mn？Ni？Cr？Zn？Cu？Pb？Co？As？Se？Cd. The metal concentrations in the sediment of the lake are below the limit of sediment quality guidelines determined by USEPA. Nevertheless, in order to ensure the sustainability of the water and sediment quality of G？lba？？ Lake, which is one of our natural wetlands, it is necessary to remove the pollutants that may be a source around the lake or to take precautions about it