Chemical analysis methods of rare earth chloride and light rare earth carbonate—Part 13:Determination of ammonium chloride content—Distillation-titrimetry
Chemical analysis methods for non-rare earth impurity of rare earth metals and their oxides—Part 2: Determination of ignition loss content of rare earth oxides—Gravimetric method
Chemical analysis methods of rare earth impurities in rare earth metals and their oxides—Part 4: Determination of lanthanum, cerium, praseodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium and yttrium contents in neodymium metal and oxide