Investigations on the sediment of Lake VAN II. Heavy metals, sulfur, hydrogen sulfide and thiosulfuric acid S-(2-amino ethyl ester) contents
B. Öztürk, N. Balkis, K.C. Güven, A. Aksu, M. Görgün, S.Ünlü, N. Hanilci
Istanbul University, Faculty of Fisheries, Ordu Cad. No : 200, Laleli, Istanbul, TURKEY
Istanbul University, Institute of Marine Sciences and Management,Müsküle Sok. 1, Vefa, Istanbul, TURKEY
Turkish Marine Research Foundation (TUDAV) Beykoz, Istanbul, TURKEY
Istanbul University, Engineering Faculty, Dept. of Geology, Avcilar, Istanbul, TURKEY
Fe, Mn, Pb, Cu, Zn, Ni, Cd and Cr contents were determined by AAS in sediment of Lake Van. Cadmium and nickel levels were found high. The sulfur forms were detected as precipitated, octa-sulfur and 1,2,3,5,6 pentathiepane by GC/MS. Thiosulfuric acid S –(2 – amino ethyl ester) was detected first time in sediment by GC/MS analysis. This compound was also found in algae by our labroratory. The origin was probably due to marine organisms. Hidrogen sulfide content was determined in Van Lake sediments 265.2 – 639.2 µg/g.
Keywords: Lake Van, metals, sulfur forms, thiosulfuric acid S –(2 – amino ethyl ester), hydrogen sulfide