TY - JOUR TI - Determination of Platinum, Palladium and Rhodium by Nickel Sulphide Fire Assay (Pre-Concentration) Method and its Optimization AU - MORCALI, M.H. AU - AKMAN, S. AU - YÜCEL, O. JO - Sigma Journal of Engineering and Natural Sciences PY - 2014 VL - 32 SP - 211 EP - 220 DO - ER -