GB/T 3286.3-2012
Methods for chemical analysis of limestone and dolomite.Part 3:The determination of aluminium oxide content.The chrome azurol S spectrophotometric method and the complexometric titration method (English Version)

Standard No.: GB/T 3286.3-2012
Language: Chinese, Available in English version
Release Date: 2012
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 3286.3-2012
Replace: GB/T 3286.3-1998

Scope: This part of GB/T 3286 specifies the determination of alumina content by chromazurin S spectrophotometric complexometric titration. This section applies to the determination of silica content in limestone and dolomite, and also applies to the determination of alumina content in metallurgical lime. Chrome azure S spectrophotometry, measuring range: alumina content (mass fraction) 0.01% to 0.75%; complexometric titration, measuring range: alumina content (mass fraction) greater than 0.5%.

GB/T 3286.3-2012 Referenced Document

GB/T 2007.2 General rules for the sampling and sample preparation of minerals in bulk--Manual method of sample preparation
GB/T 3286.1 Methods for chemical analysis of limestone and dolomite.Part 1:The determination of calcium oxide and magnesium oxide content.The complexometric titration method and the flame atomic absorption spectrometric method
GB/T 3286.2 Methods for chemical analysis of limestone and dolomite.Part 2:The determination of silicon dioxide content.The silicomolybdic blue spectrophotometric method and the perchloric acid dehydration gravimetric method
GB/T 3286.4 Methods for chemical analysis of limestone and dolomite.Part 4:The determination of iron oxide content.The o-phenanthroline spectrophotometric method and the flame atomic absorption spectrometric method
GB/T 6379.2 Accuracy(trueness and precision)of measurement methods and results-Part 2:Basic method for the determination of repeatability and reproducibility of a standard measurement method
GB/T 6682 Water for analytical laboratory use.Specification and test methods
GB/T 8170 Rules of rounding off for numerical values & expression and judgement of limiting values

2012 GB/T 3286.3-2012 Methods for chemical analysis of limestone and dolomite.Part 3:The determination of aluminium oxide content.The chrome azurol S spectrophotometric method and the complexometric titration method
1998 GB/T 3286.3-1998 Methods for chemical analysis of limestone and dolomite--The determination of aluminium oxide content