WARNING: Personnel applying this standard should have practical experience in formal laboratory work. This section does not address all possible security issues. It is the user's responsibility to take appropriate safety and health measures and ensure compliance with the conditions stipulated in the relevant national laws and regulations. This part of GB/T 223 specifies the gravimetric method for the determination of sulfur content in iron and steel, except for selenium-containing steel. This method is especially suitable as a reference method for the determination of standard samples. Method 1 in this part is applicable to the determination of sulfur content with a mass fraction of 0.003% to 0.35%; method 2 in this part is applicable to the determination of sulfur content with a mass fraction of 0.003% to 0.20%.
GB/T 223.72-2008 Referenced Document
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
ISO 3696 Water for analytical laboratory use; Specification and test methods
ISO 565 Test sieves; metal wire cloth, perforated metal plate and electroformed sheet; nominal sizes of openings
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 223.72-2008 history
2008GB/T 223.72-2008 Iron,steel and alloy.Determination of sulfur content.Gravimetric method
1991GB/T 223.72-1991 Methods for chemical analysis of iron,steel and alloy--The alumina chromatographic separation-barium sulfate gravimetric method for the deteremination of sulphur content