GB/T 2441.4-2001
Determination of urea Determination of iron content 1,10-Phenanthroline spectrophotometric method (English Version)
- Standard No.
- GB/T 2441.4-2001
- Language
- Chinese, Available in English version
- Release Date
- 2001
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Status
- 2011-01
- Replace By
- GB/T 2441.4-2010
- Latest
- GB/T 2441.4-2010
- Scope
- This standard specifies the determination of iron content in industrial urea by o-phenanthroline spectrophotometry. This standard applies to the determination of iron content in industrial urea synthesized from ammonia and carbon dioxide.
GB/T 2441.4-2001 history
- 2010 GB/T 2441.4-2010 Determination of urea-Part 4:Iron content-1,10-Phenanthroline spectrophotometric method
- 2001 GB/T 2441.4-2001 Determination of urea Determination of iron content 1,10-Phenanthroline spectrophotometric method
GB/T 2441.4-2001 -All Parts
GB/T 2441.1-2008 Determination of urea.Part 1:Total nitrogen content
GB/T 2441.2-2010 Determination of urea-Part2: Biuret content-Spectrophotomatric method
GB/T 2441.3-2010 Determination of urea-Part 3:Water content-Karl Fischer method
GB/T 2441.4-2010 Determination of urea-Part 4:Iron content-1,10-Phenanthroline spectrophotometric method
GB/T 2441.5-2010 Determination of urea-Part 5: Alkalinity-Titrimetric method
GB/T 2441.6-2010 Determination of urea-Part 6:Water insoluble matter content-Weight method
GB/T 2441.7-2010 Determination of urea-Part 7: Particle size-Sieve method
GB/T 2441.8-2010 Determination of urea-Part 8: Sulphate content-Visible turbidimetric method
GB/T 2441.9-2010 Determination of urea-Part 9:Methylenediurea content-Spectrophotometric method