GB/T 1831-1979
Determination of silicon dioxide content in tin concentrates--Silicon molybdenum blue photometric method (English Version)

Standard No.

GB/T 1831-1979

Language

Chinese, Available in English version

Release Date

1979

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Status

Be replaced 2004-07

Replace By

GB/T 1819.12-2004

Latest

GB/T 1819.12-2017

Scope

Determination of silicon dioxide content in tin concentrate (silicon molybdenum blue absorptiometry)

GB/T 1831-1979 history

• 2017 GB/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
• 2004 GB/T 1819.12-2004 Methods for chemical analysis of tin concentrates Determination of silicon dioxide content-The silicomolybdenum blue spectrophotometric method
• 1979 GB/T 1831-1979 Determination of silicon dioxide content in tin concentrates--Silicon molybdenum blue photometric method

GB/T 1831-1979 Determination of silicon dioxide content in tin concentrates--Silicon molybdenum blue photometric method was changed to GB/T 1819.12-2004 Methods for chemical analysis of tin concentrates Determination of silicon dioxide content-The silicomolybdenum blue spectrophotometric method.