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 stipulates the determination of iron content by o-phenanthroline spectrophotometry. This part is applicable to the determination of iron content with a mass fraction of 0.10% to 1.00% in superalloys and precision alloys.
GB/T 223.70-2008 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
GB/T 223.70-2008 history
2008GB/T 223.70-2008 Iron,steel and alloy.Determination of iron contents. o-Phenanthroline spectrophotometric method
1989GB/T 223.70-1989 Methods for chemical analysis of iron,steel and alloy--The o-phenanthroline spectrophotometric method for the determination of iron content