HB/Z 5087.1-2004
Methods for analysis of acid plating copper solutions part 1:Determination of copper sulfate content by EDTA volumetric method
HB/Z 5087.2-2004
Methods for analysis of acid plating copper solutions part 2:Determination of copper sulfate content by potentiometric titrimetric method
GB/T 505-1965
Determination of mercaptan-sulfur in engine fuels (ammonia-copper sulfate method)