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International Standard Category: Oxides

GB/T 8762.5-1988    Yttrium oxide of phosphor grade--Determination of trace rare earth oxide contents--Spectrochemical method and direct spectrographic method
荧光级氧化钇中微量稀土氧化物测定 化学光谱和直接光谱法 ;
Category No.:71.060.20 Valid Status:superseded
Issued Organization:National Bureau of Standards Issued Date:1988-02-25
Implemented Date:1989-2-1 Abolished Date:
Superseded Standard.:GB/T 18115.12-2006 Chemical analysis methods of rare earth impurities in rare earth metals and their oxides Yttrium - Determination of lanthanum, cerium, praseodymium, neodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium and lu
Superseded Date:2006-10-1
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