GB/T 6609.12-2018 Chemical analysis methods and determination of physical performance of alumina—Part 12:Determination of zinc oxide content—Flame atomic absorption spectrometry method (English Version)
2018GB/T 6609.12-2018 Chemical analysis methods and determination of physical performance of alumina—Part 12:Determination of zinc oxide content—Flame atomic absorption spectrometry method
2004GB/T 6609.12-2004 Chemical analysis methods and determination of physical performance of alumina Determination of zinc oxide content-Flame atomic absorption spectrophotometric method
1986GB/T 6609.12-1986 Methods for the chemical analysis of aluminium oxide--The atomic absorption spectrophotometric method for the determination of zinc oxide content