This part of GB/T 223 specifies the determination of cobalt content in iron and steel by flame atomic absorption spectrometry. This part applies to the determination of the content of cobalt in steel and alloys with a mass fraction of 0.003%~5.0%.
GB/T 12808 Laboratory glass instrument single marked line pipette*, 2016-07-01 Update
GB/T 20066 Steel and iron.Sampling and preparation of samples for the determination of chemical composition
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
ISO 5725-3 Accuracy (trueness and precision) of measurement methods and results — Part 3: Intermediate precision and alternative designs for collaborative studies*, 2023-06-01 Update
GB/T 223.65-2012 history
2012GB/T 223.65-2012 Steel, iron and alloy.Determination of cobalt content.Flame atomic absorption spectrometric method
1988GB/T 223.65-1988 Methods for chemical analysis of iron, steel and alloy--The flame atomic absorption spectrometric method for the determination of cobalt content