GB 4581.7-1984
Alunite ores--Determination of potassium and sodium contents--Potassium tetraphenylborate gravimetric method and flame emission spectrophotometric methods
1985-06
- Standard No.
- GB 4581.7-1984
- Language
- Chinese
- Release Date
- 1984
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Lastest
- GB 4581.7-1984
- Replace By
- HG/T 2957.7-1984(1997)
- Scope
- This standard stipulates that the following methods are used to determine the content of potassium oxide and sodium oxide in alunite ore: method Ⅰ: Potassium tetraphenylborate gravimetric method to determine the content of 1.00-7.00% potassium oxide in alunite ore; method Ⅱ: flame emission spectrophotometry Determination of 1.00-7.00% potassium oxide content and 0.10-2.00% sodium oxide content in alunite ore.
GB 4581.7-1984 history
- 1984 GB 4581.7-1984 Alunite ores--Determination of potassium and sodium contents--Potassium tetraphenylborate gravimetric method and flame emission spectrophotometric methods
GB 4581.7-1984 -All Parts
GB 4581.10-1984 Alunite ores--Determination of total iron content--Sulphosalicylic acid photometric method
GB 4581.11-1984 Alunite ores--Determination of titanium content--Diantipyrylmethane photometric method
GB 4581.2-1984 Alunite ores--Analytical samples--The methods of the sampling and preparation
GB 4581.3-1984 Alunite ores--Determination of hygroscopic moisture content in analytical samples--Gravimetric method
GB 4581.4-1984 Alunite ores--Determination of sulphur content for sulphate--Barium sulphate gravimetric method
GB 4581.5-1984 Alunite ores--Determination of aluminium content--Volumetric method
GB 4581.6-1984 Alunite ores--Determination of combined water content--Gravimetric method
GB 4581.7-1984 Alunite ores--Determination of potassium and sodium contents--Potassium tetraphenylborate gravimetric method and flame emission spectrophotometric methods
GB 4581.8-1984 Alunite ores--Determination of total sulphur content--Barium sulphate gravimetric method
GB 4581.9-1984 Alunite ores--Determination of silicon content--Gravimetric method