GB/T 3257.15-1999 Methods for chemical analysis of bauxite--Determination the total content of rare earth oxide--Tribromo-arsenazo photometric method (English Version)
This standard specifies the method for the determination of the total amount of rare earth oxides in bauxite ore. This standard applies to the determination of the total amount of rare earth oxides in bauxite ore, and the determination range is 0.020% to 0.300%.
GB/T 3257.15-1999 history
1999GB/T 3257.15-1999 Methods for chemical analysis of bauxite--Determination the total content of rare earth oxide--Tribromo-arsenazo photometric method
GB/T 3257.15-1999 Methods for chemical analysis of bauxite--Determination the total content of rare earth oxide--Tribromo-arsenazo photometric method was changed to YS/T 575.14-2006 Chemical analysis method of bauxite ore-tribromoarsine spectrophotometric determination of total rare earth oxides.