GB/T 4699.3-2007
Ferrochromium, silicochromium and nitrogen-bearing ferrochromium.Determination of phosphorus content.Molybdobismuthylphosphoric blue speckophotometric method and the molybdenum blue spectrophotometric method (English Version)
- Standard No.
- GB/T 4699.3-2007
- Language
- Chinese, Available in English version
- Release Date
- 2007
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Latest
- GB/T 4699.3-2007
- Replace
- GB/T 5687.3-1985 GB/T 4699.3-1984
- Scope
- WARNING—Personnel using this section should have practical experience in formal laboratory work. This section does not address all possible security issues. It is the user's responsibility to take appropriate safety and health measures and ensure compliance with the conditions stipulated in the relevant national laws and regulations. This part of GB/T 4699 specifies the determination of phosphorus content by bismuth phosphomolybdenum blue spectrophotometry and molybdenum blue spectrophotometry. This part is applicable to the determination of phosphorus content in soldering iron, vacuum micro-carbon ferrochromium, ferrochromium nitride and silicon-chromium alloy. The measurement range (mass fraction) of bismuth phosphorus molybdenum blue spectrophotometry: 0.008% ~ 0.080%; molybdenum blue photometry Measuring range (mass fraction): <0.15%.
GB/T 4699.3-2007 Referenced Document
- GB/T 4010 Ferroallys sampling and preparation of samples for chemical analysis*， 2015-09-11 Update
GB/T 4699.3-2007 history
- 2007 GB/T 4699.3-2007 Ferrochromium, silicochromium and nitrogen-bearing ferrochromium.Determination of phosphorus content.Molybdobismuthylphosphoric blue speckophotometric method and the molybdenum blue spectrophotometric method
- 1984 GB/T 4699.3-1984 Methods for chemical analysis of silicochromium--The molybdenum blue photometric method for the determination of phosphorus content
GB/T 4699.3-2007 Ferrochromium, silicochromium and nitrogen-bearing ferrochromium.Determination of phosphorus content.Molybdobismuthylphosphoric blue speckophotometric method and the molybdenum blue spectrophotometric method has been changed from GB/T 5687.3-1985 Methods for chemical analysis of ferro-chromium--The molybdenum blue photometric method for the determination of phosphorus content.
GB/T 4699.3-2007 -All Parts
GB/T 4699.1-1984 Methods for chemical analysis of silicochromium--The gravimetric method for the determination of silicon content
GB/T 4699.2-2008 Ferrochromium and ferrosilicochromium. Determination of chromium content. The ammonium persulfate oxidation titrimetric method and potentiometric titration method
GB/T 4699.3-2007 Ferrochromium, silicochromium and nitrogen-bearing ferrochromium.Determination of phosphorus content.Molybdobismuthylphosphoric blue speckophotometric method and the molybdenum blue spectrophotometric method
GB/T 4699.4-2008 Ferrochromium and silicochromium. Determination of carbon content. Infrared absorption method and gravimetric method
GB/T 4699.6-2008 Ferrochromium and silicochromium. Determination of sulfur content. The infrared absorption method and combustion-titration method
GB/T 4699.7-1988 Methods for chemical analysis of silicochromium--The combustion-neutralization titration method for the determination of sulfur content