GB/T 4372.3-1984 Methods for chemical analysis of zinc oxide(direct process)--The biscyclohexanone oxalyl dihydrazone photometric method for the determination of copper oxide content
2015GB/T 4372.3-2015 Methods for chemical analysis of zincoxide produced by direct process.Part 3:Determination of copper oxide content.Flame atomic absorption spectrometry method
2001GB/T 4372.3-2001 Methods for chemical analysis of zinc oxide produced by direct process--Determination of copper oxide content--Atomic absorption spectrometry method
1984GB/T 4372.3-1984 Methods for chemical analysis of zinc oxide(direct process)--The biscyclohexanone oxalyl dihydrazone photometric method for the determination of copper oxide content