2009YS/T 226.6-2009 Methods for chemical analysis of selenium.Part 6:Determination of sulfur content.Diphenylcarbazide spectrophotometry
1970YS/T 226.10-1994 Determination of sulfur content in selenium (distillation reduction absorptiometry)
YS/T 226.10-1994 Determination of sulfur content in selenium (distillation reduction absorptiometry) was changed to YS/T 226.6-2009 Methods for chemical analysis of selenium.Part 6:Determination of sulfur content.Diphenylcarbazide spectrophotometry.