%0 Journal Article %T Determination of Platinum, Palladium and Rhodium by Nickel Sulphide Fire Assay (Pre-Concentration) Method and its Optimization %A MORCALI, M.H. %A AKMAN, S. %A YÜCEL, O. %J Sigma Journal of Engineering and Natural Sciences %D 2014 %V 32 %P 211-220 %R