Standardless EDXRF Application For Quantification Of Thorium (Th), Uranium (U) And Rare Earth Elements (REEs) In Various Malaysian Rare Earth Ores

摘要

Our local rare earth ores contained substantial amount of Thorium and Uranium which the level exceed permissible limit adopted by Malaysia and many importing nation. X-ray fluorescence technique has been applied for determination of thorium (Th), uranium (U) and rare earth elements (REEs) in Malaysian rare earth ores as it's recognized as viable tool. XRF has been widely used in detecting elemental composition of unknown materials both qualitative and quantitatively because of its wide range of element detection alongside the non-destructive analytical technique with great accuracy and precision. Four types of minerals sample which is monazite, xenotime, ilmenite and zircon were collected from 'amang' factory located in famous city of mining, Ipoh and analyzed using EDXRF.