GB/T 13840-1992
Abolished
GB/T 14635-2008
Replaced
National standards
GB/T 14635-2008 Rare earth metals and their compounds—Determination of total rare earth contents
GB/T 14635-2008 Rare earth metals and their compounds—Determination of total rare earth contents
Basic Information
Standard Code:
GB/T 14635-2008
Standard Type:
National standards
Standard Status:
Replaced
is_force_gb:
no
CCS Name:
Analysis methods for rare metals and their alloys
ICS Name:
Other non-ferrous metals and their alloys
Publish Date:
2008-06-17
Implement Date:
2008-12-01
Pages:
12 pages
Scope
This method specifies the determination method for the total rare earth content in single and mixed rare earth metals and their compounds. This method is applicable to the determination of the total rare earth content in single and mixed rare earth metals and their compounds, and the determination range is shown in Table 1. This method is not applicable to the determination of the total rare earth content in single and mixed rare earth metals and their compounds, which are mainly composed of holmium, erbium, thulium, ytterbium, and lutetium, or those with thorium and lead contents (mass fraction) greater than 0.1%.
Development Information
Replace the following standards
GB/T 8762.1-1988 Yttrium oxide and europium oxide of phosphor grade—Determination of total rare earth oxide content—EDTA volumetric method
GB/T 12687.1-1990 Chemical analysis of nitrate of rare earth for agriculture—Determination of total rare earth oxide content—Gravimetric method
GB/T 14635.1-1993 Rare earth metals and their compounds—Determination of total rare earth contents—Rare earth oxalate gravimetric method
GB/T 14635.2-1993 Rare earth metals and their compounds—Determination of total rare earth contents—EDTA volumetric method
GB/T 14635.3-1993 Heavy rare earth metals and their compounds—Determination of total rare earth contents—EDTA volumetric method
GB/T 16484.19-1996 Methods for chemical analysis of rare earth chloride and carbonate—Determination of total rare earth oxide contents
GB/T 18882.1-2002 Chemical analysis methods for mixed rare earth oxide of ion-absorpted type RE ore—Determination of total rare earth contents—Oxalate gravimetric method
Superseded by the following standards
Related Standards
GB/T 15677-1995
Replaced
GB/T 15677-1995 Lanthanum metal
GB/T 3136-1995
abolished_transferred
GB/T 3136-1995 Tantalum powders
GB/T 3463-1995
Abolished
GB/T 3463-1995 Tantalum wires
GB/T 3628-1995
Replaced
GB/T 3628-1995 Tantalum and tantalum alloy foils
GB/T 16476-1996
Replaced