Chemical analysis methods of rare earth impurities in rare earth metals and their oxides Cerium—Determination of lanthanum,praseodymium,neodymium,samarium,europium,gadolinium,terbium,dysprosium,holmium,erbium,thulium,ytterbium,lutetium and yttrium contents
Chemical analysis methods of rare earth contents in samarium-europium-gadolinium concentrates - Part 1: Determination of total rare earth oxide content - Gravimetry