GB/T 3286.4-2012 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 (English Version)
This part of GB/T 3286 specifies the determination of iron oxide content by o-phenanthroline spectrophotometry and flame atomic absorption spectrometry. This section applies to the determination of iron oxide content (calculated as ferric oxide) in limestone and dolomite, and also applies to the determination of iron oxide content in metallurgical lime. O-phenanthroline spectrophotometry, measuring range (mass fraction): iron oxide content 0.02% to 4.0%; flame atomic absorption spectrometry, measuring range (mass fraction): iron oxide content 0.02% to 4.0%.
GB/T 3286.4-2012 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 3286.3 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
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 7728 Chemical analysis of metallurgical products—General rule for flame atomic absorption spectrometric methods*, 2021-08-20 Update
GB/T 8170 Rules of rounding off for numerical values & expression and judgement of limiting values
GB/T 3286.4-2012 history
2012GB/T 3286.4-2012 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
1998GB/T 3286.4-1998 Methods for chemical analysis of limestone and dolomite--The determination of iron oxide content