GB/T 13747.22-2017 Methods for chemical analysis of zirconium and zirconium alloys—Part 22:Determination of oxygen and nitrogen contents—Inert gas fusion-infrared absorption and thermal conductivity method (English Version)
2017GB/T 13747.22-2017 Methods for chemical analysis of zirconium and zirconium alloys—Part 22:Determination of oxygen and nitrogen contents—Inert gas fusion-infrared absorption and thermal conductivity method
1992GB/T 13747.22-1992 Zirconium and zirconium alloys--Determination of oxygen content--Inert gas fusion coulometric method