- Standard No.
- GB/T 6150.9-1985
- Language
- Chinese
- Release Date
- 1985
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Replace By
-
GB/T 6150.7-2008
- Lastest
-
GB/T 6150.7-2008
- Scope
- This standard applies to the determination of niobium and tantalum in tungsten concentrate. Measuring range: niobium pentoxide 0.01-1.00%; tantalum pentoxide 0.005-0.250%.
GB/T 6150.9-1985 history
- 2008 GB/T 6150.7-2008 Methods for chemical analysis of tungsten concentrates.Determination of tantalum content and niobium content.Inductively coupled plasma emission spectrometry and spectrophotometry
- 1985 GB/T 6150.9-1985 Methods for chemical analysis of tungsten concentrates--The chlorosulphophenol S photometric method for the determination niobium content--The butylrhodamine B extraction photometric method for the determinati
GB/T 6150.9-1985 Methods for chemical analysis of tungsten concentrates--The chlorosulphophenol S photometric method for the determination niobium content--The butylrhodamine B extraction photometric method for the determinati was changed to GB/T 6150.7-2008 Methods for chemical analysis of tungsten concentrates.Determination of tantalum content and niobium content.Inductively coupled plasma emission spectrometry and spectrophotometry.