YS/T 575.6-2006 Methods for chemical analysis of bauxite ore - Diantipyridine methane spectrophotometric method for the determination of titanium dioxide content (English Version)
2007YS/T 575.6-2007 Methods for chemical analysis of bauxite.Part 6:Determination of titanium dioxide content.Diantipyrylmethane photometric method
1999YS/T 575.6-2006 Methods for chemical analysis of bauxite ore - Diantipyridine methane spectrophotometric method for the determination of titanium dioxide content