This standard specifies the determination of alumina content by chrome azure S photometric method and EDTA titration method. This standard applies to the determination of alumina content in limestone and dolomite, and also applies to the determination of alumina content in metallurgical lime.
GB/T 3286.3-1998 history
2012GB/T 3286.3-2012 Methods for chemical analysis of limestone and dolomite.Part 3:The determination of aluminium oxide content.The chrome azurol S spectrophotometric method and the complexometric titration method
1998GB/T 3286.3-1998 Methods for chemical analysis of limestone and dolomite--The determination of aluminium oxide content