GB 223.3-1988 Methods for chemical analysis of iron, steel and alloys-Diantipyrine methane phosphomolybdic acid gravimetric method for determination of phosphorus content
2022GB/T 223.63-2022 Iron, steel and alloy—Determination of manganese content—Sodium (potassium) periodate spectrophotometric method
2009GB/T 223.83-2009 Steel and iron.Determination of high sulfur content.Infrared absorption method after combustion in an induction furnace
2008GB/T 223.23-2008 Iron,,steel and alloy.Determination of nickel content.The dimethylglyoxime spectrophotometric method
1994GB/T 223.23-1994 Methods for chemical analysis of iron, steel and alloy.The dimethylglyoxime spectrophotometric method for the determination of nickel content
1982GB 223.23-1982 Chemical analysis of iron,steel and alloy--The determination of nickel by dimethylglyoxime photometric method