GB/T 13747.19-2017 Methods for chemical analysis of zirconium and zirconium alloys—Part19:Determination of titanium content—Diantipyrylmethane spectrophotometry and the inductively coupled plasma atomic emission spectrometry
2017GB/T 13747.19-2017 Methods for chemical analysis of zirconium and zirconium alloys—Part19:Determination of titanium content—Diantipyrylmethane spectrophotometry and the inductively coupled plasma atomic emission spectrometry
1992GB/T 13747.19-1992 Zirconium and zirconium alloys--Determination of titanium content--Diantipyrylmethane spectrophotometric method