YB/T 159.2-1999 Methods for chemical analysis of titanium concentrate (rock minerals).The titanium chloride-potassium dichromate volumetric method for the determination of total iron content (English Version)
2015YB/T 159.2-2015 Titanium concentrate (rock minerals).Determination of total iron content.The titanium chloride-potassium dichromate titrimetric method
1999YB/T 159.2-1999 Methods for chemical analysis of titanium concentrate (rock minerals).The titanium chloride-potassium dichromate volumetric method for the determination of total iron content