This standard specifies the content of lanthanum oxide, cerium oxide, praseodymium oxide, neodymium oxide, samarium oxide, europium oxide, gadolinium oxide, terbium oxide, dysprosium oxide, erbium oxide, thulium oxide, ytterbium oxide, lutetium oxide and yttrium oxide in holmium oxide. test methods. This standard applies to the content of lanthanum oxide, cerium oxide, praseodymium oxide, neodymium oxide, samarium oxide, europium oxide, gadolinium oxide, terbium oxide, dysprosium oxide, erbium oxide, thulium oxide, ytterbium oxide, lutetium oxide and yttrium oxide in holmium oxide. Determination.
GB/T 18115.9-2000 history
2006GB/T 18115.10-2006 Chemical analysis methods of rare earth impurities in rare earth metals and their oxides Holmium.Determination of lanthanum,cerium,praseodymium,neodymium,samarium,europium, gadolinium,terbium,dysprosium,erbium,thulium, ytterbium, lutetium and yttrium cont
GB/T 18115.9-2000 Holmium oxide-Determination of lanthanum oxide,cerium oxide,praseodymium oxide,neodymium oxide,samarium oxide,europium oxide,gadolinium oxide,terbium oxide,dysprosium oxide,erbium oxide,thulium oxide,ytterbium oxide,lutetium oxide and yttrium oxide conten was changed to GB/T 18115.10-2006 Chemical analysis methods of rare earth impurities in rare earth metals and their oxides Holmium.Determination of lanthanum,cerium,praseodymium,neodymium,samarium,europium, gadolinium,terbium,dysprosium,erbium,thulium, ytterbium, lutetium and yttrium cont.