GB/T 8151.2-1987 Methods for chemical analysis of zinc concentrates--The combustion-neutralization titrimetric method for the determination of sulfur content
2020GB/T 8151.22-2020 Methods for chemical analysis of zinc concentrates—Part 22: Determination of zinc, copper, lead,iron,aluminium ,calcium and magnesium contents—Wavelength dispersive X-ray fluorescence spectrometric method
2012GB/T 8151.2-2012 Methods for chemical analysis of zinc concentrates.Part 2:Determination of sulfur content.The combustion neutralization titrimetric method
2000GB/T 8151.2-2000 Methods for chemical analysis of zinc concentrates -Determination of sulfur content
1987GB/T 8151.2-1987 Methods for chemical analysis of zinc concentrates--The combustion-neutralization titrimetric method for the determination of sulfur content