Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides Determination of thorium content Arsenazo III spectrophotometric method and Inductively coupled plasma mass spectrum method
STANDARD published on 18.11.2003
Designation standards: GB/T 12690.12-2003
Note: WITHDRAWN
Publication date standards: 18.11.2003
Country: Chinese technical standard
Category: Technical standards GB