YS/T 461.3-2003 The methods for chemical analysis of lead-zinc bulk concentrates-The determination of sulfur content-The combustion-neustralinzation titrmetric method (English Version)
2013YS/T 461.3-2013 Methods for chemical analysis of lead and zinc bulk concentrates.Part 3:The determination of sulfur content.Combustion-neustralinzation titrimetric method
2003YS/T 461.3-2003 The methods for chemical analysis of lead-zinc bulk concentrates-The determination of sulfur content-The combustion-neustralinzation titrmetric method