YS/T 520.12-2006 Gallium chemical analysis method Determination of lead, copper, nickel, aluminum, indium and zinc content by chemical spectroscopy (English Version)
2007YS/T 520.12-2007 Chemical analysis of gallium.Part 12:Determination of lead,copper,nickel,aluminum,indium and zinc content.The spectrochemical method
2006YS/T 520.12-2006 Gallium chemical analysis method Determination of lead, copper, nickel, aluminum, indium and zinc content by chemical spectroscopy