2009YS/T 514.4-2009 Methods for chemical analysis of high-titanium slag and rutile.Part 4:Determination of silicon dioxide content.Gravimetric analysis and molybdenum blue spectrophotometry
2006YS/T 514.7-2006 High titanium slag, rutile chemical analysis method gravimetric determination of silicon dioxide content
YS/T 514.7-2006 High titanium slag, rutile chemical analysis method gravimetric determination of silicon dioxide content was changed to YS/T 514.4-2009 Methods for chemical analysis of high-titanium slag and rutile.Part 4:Determination of silicon dioxide content.Gravimetric analysis and molybdenum blue spectrophotometry.