GB/T 3257.5-1999 Methods for chemical analysis of bauxite--Determination of iron oxide content--Orthophenanthroline photometric method (English Version)
This standard specifies the determination method of ferric oxide content in bauxite. This standard is applicable to the determination of ferric oxide content in bauxite, the determination range: ≤5.00%.
GB/T 3257.5-1999 history
1999GB/T 3257.5-1999 Methods for chemical analysis of bauxite--Determination of iron oxide content--Orthophenanthroline photometric method
GB/T 3257.5-1999 Methods for chemical analysis of bauxite--Determination of iron oxide content--Orthophenanthroline photometric method was changed to YS/T 575.5-2006 Bauxite ore chemical analysis method o-phenanthrene spectrophotometric determination of ferric oxide content.