This part of GB/T 6730 specifies the determination of sodium content in iron ore by flame atomic absorption spectrometry. This section applies to the determination of sodium content in iron ore, iron concentrate, sinter and pellets. Measuring range (mass fraction): 0.002 5%~1.50%.
GB/T 6730.75-2017 Referenced Document
GB/T 10322.1 Iron ore sampling and sample preparation methods*， 2023-08-06 Update
GB/T 12808 Laboratory glass instrument single marked line pipette
GB/T 6379.1 Accuracy(trueness and precision)of measurement methods and results Part 1:General principles and definitions
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 6730.1 Iron ores.Preparation of predried test samples for chemical analysis
GB/T 6730.3 Iron ores—Determination of hygroscopic moisture in analytical samples—Gravimetric, Karl Fischer and mass-loss 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 6730.75-2017 history
2017GB/T 6730.49-2017 Iron ores.Determination of potassium content.Flame atomic absorption spectrometric method
1986GB/T 6730.49-1986 Methods for chemical analysis of iron ores--The flame atomic absorption spectrophotometric method for the determination of sodium and potassium content