TRACE AND TOXIC ELEMENTS IN THE WATERS OF A CONTAMINATED WATERSHED IN TURKEY. - TOKATLI, Cem; KÖSE, Esengül; ÇİÇEK, Arzu; EMİROĞLU, Özgür (Sigma: Journal of Engineering & Natural Sciences / Mühendislik ve Fen Bilimleri Dergisi, 2020)