荧光级氧化铕中氧化铈、氧化镨、氧化钐、氧化钆和氧化镝量测定 化学光谱和直接光谱法

Europium oxide of phosphor grade--Determination of cerium oxide，praseodymium oxide，samarium oxide，gadolinium oxide and dysprosium oxide contents--Spectrochemical method and direct spectrographic method