GB/T 1819.12-2004 Methods for chemical analysis of tin concentrates Determination of silicon dioxide content-The silicomolybdenum blue spectrophotometric method (English Version)
This standard specifies the determination method of silica content in tin concentrate. This standard applies to the determination of silica content in tin concentrate. Measuring range: 0.10% to 10.00%.
GB/T 1819.12-2004 history
2017GB/T 1819.12-2017 Methods for chemical analysis of tin concentrates—Part 12:Determination of silicon dioxide content—The silicomolybdenum blue spectrophotometry and sodium hydroxide titration
2004GB/T 1819.12-2004 Methods for chemical analysis of tin concentrates Determination of silicon dioxide content-The silicomolybdenum blue spectrophotometric method
1979GB/T 1831-1979 Determination of silicon dioxide content in tin concentrates--Silicon molybdenum blue photometric method
GB/T 1819.12-2004 Methods for chemical analysis of tin concentrates Determination of silicon dioxide content-The silicomolybdenum blue spectrophotometric method has been changed from GB/T 1831-1979 Determination of silicon dioxide content in tin concentrates--Silicon molybdenum blue photometric method.