GB/T 4698.1-2017 Methods for chemical analysis of titanium sponge, titanium and titanium alloys—Part 1:Determination of copper content—Flame atomic absorption spectrometry (English Version)
2017GB/T 4698.1-2017 Methods for chemical analysis of titanium sponge, titanium and titanium alloys—Part 1:Determination of copper content—Flame atomic absorption spectrometry
1996GB/T 4698.1-1996 Sponge titanium, titanium and titanium alloys--Determination of copper content--Diethyldithiocarbamate spectrophotometric method