GB/T 223.37-2020
Iron, steel and alloy—Determination of nitrogen content—Indophenol blue spectrophotometric method after distillation separation (English Version)

Standard No.
GB/T 223.37-2020
Language
Chinese, Available in English version
Release Date
2020
Published By
国家市场监督管理总局、中国国家标准化管理委员会
Latest
GB/T 223.37-2020
Replace
GB/T 223.37-1989
Scope
This part of GB/T223 specifies the method for the determination of nitrogen content in steel and alloys by distillation and separation of indophenol blue spectrophotometry. This section applies to the determination of nitrogen content in the range of 0.0006% to 0.050% by mass fraction in low alloy steel and 0.010% to 0.050% in mass fraction in high alloy steel. This section does not apply to the determination of nitrogen content in steel and alloys containing silicon nitride or silicon content exceeding 0.6%.

GB/T 223.37-2020 Referenced Document

  • ISO 14284 Steel and iron — Sampling and preparation of samples for the determination of chemical composition*， 2022-10-25 Update
  • ISO 3696 Water for analytical laboratory use; Specification and test methods
  • ISO 648 Laboratory glassware - Single-volume pipettes

GB/T 223.37-2020 history

  • 2020 GB/T 223.37-2020 Iron, steel and alloy—Determination of nitrogen content—Indophenol blue spectrophotometric method after distillation separation
  • 1989 GB/T 223.37-1989 Methods for chemical analysis of iron,steel and alloy--The indophenol blue photometric methods for the determination of nitrogen content after distillation separation
  • 1985 GB 223.37-1985 Methods for chemical analysis of iron, steel and alloys Distillation separation-volumetric determination of nitrogen content
Iron, steel and alloy—Determination of nitrogen content—Indophenol blue spectrophotometric method after distillation separation

GB/T 223.37-2020 -All Parts

GB/T 223.1-1981 Determination of carbon content in iron,steel and alloy GB/T 223.10-2000 Methods for chemical analysis of iron,steel and alloy The cupferron separation-chrome azurol S photometric method for the determination of aluminium content GB/T 223.11-2008 Determination of chromium content in iron, steel and alloy by visual titration or potentiometric titration GB/T 223.12-1991 Methods for chemical analysis of iron,steel and alloy--The sodium carbonate separation-diphenyl carbazide photometric method for the determination of chromium content GB/T 223.13-2000 Methods for chemical analysis of iron,steel and alloy The ammonium ferrous sulfate titration method for the determination of vanadium content GB/T 223.14-2000 Methods for chemical analysis of iron,steel and alloy The N-benzoy-N-phenylhydroxylamine extraction photometric method for the determination of vanadium content GB/T 223.15-1982 Chemical analysis of iron,steel and alloy--The determination of titanium by gravimetric method GB/T 223.16-1991 Methods for chemical analysis of iron,steel and alloy--The chromotropic acid photometric method for the determination of titanium content GB/T 223.17-1989 Methods for chemical analysis of iron,steel and alloy--The diantipyrylmethane photometric method for the determination of titanium content GB/T 223.18-1994 Methods for chemical analysis of iron steel and alloy.The sodium thiosulfate separation iodimetric method for the determination of cupper content GB/T 223.19-1989 Methods for chemical analysis of iron,steel and alloy--The neocuproine-chloroform extraction photometric method for the determination of copper content GB/T 223.2-1981 Determination of sulfur content in steel and alloy GB/T 223.20-1994 Methods for chemical analysis of iron steel and alloy.The Potentiometric titration method for the determination of cobalt content GB/T 223.21-1994 Methods for chemical analysis of iron steel and alloy.The 5-CL-PADAB spectrophotometric method for the determination of cobalt content GB/T 223.22-1994 Methods for chemical analysis of iron ,steel and alloy.The nitroso-R-salt spectrophotometric method for the determination of cobalt content GB/T 223.23-2008 Iron,,steel and alloy.Determination of nickel content.The dimethylglyoxime spectrophotometric method GB/T 223.24-1994 Methods for chemical analysis of iron, steel and alloy.The extraction seperation--The dimethylglyoxime spectrophotometric method for the determination of nickel content GB/T 223.25-1994 Methods for chemical analysis of iron, steel and alloy.The dimethylglyoxime gravimetric method for the determination of nickel content GB/T 223.26-2008 Iron,steel and alloy.Determination of molybdenum content.The thiocyanate spectrophotometric method GB/T 223.27-1994 Methods for chemical analysis of iron, steel and alloy.The thiocyanate-butyl acetate extraction spectrophotometric method for the determination of molybdenum content GB/T 223.28-1989 Methods for chemical analysis of iron,steel and alloy--The α-benzoinoxime gravimetric method for the determination of molybdenum content GB/T 223.29-2008 Iron,steel and alloy.Determination of lead content.Carrier precipitation-xylenol orange spectrophotometric method GB/T 223.3-1988 Methods for chemical analysis of iron, steel and alloy--The diantipyrylmethane phosphomolybdate gravimetric method for the determination of phosphorus content GB/T 223.30-1994 Methods for chemical analysis of iron,steel and alloy. The arsenazo Ⅲ spectrophotometric method for the determination of zirconium content after separation by p-bromomandelic acid GB/T 223.31-2008 Iron,steel and alloy.Determination of arsenic content.Distillation-molybdenum blue spectrophotometric method GB/T 223.32-1994 Methods for chemical analysis of iron,steel and alloy. The hypophosphite reduction-iodimetric method for the determination of arsenic content GB/T 223.33-1994 Methods for chemical analysis of iron,steel and alloy. The chlorophosphonazo mA photometric method for the determination of cerium content after extraction separation GB/T 223.34-2000 Methods for chemical analysis of iron,steel and alloy-The determination of hydrochloric acid-insoluble content of iron powders GB/T 223.35-1985 Methods for chemical analysis of iron,steel and alloy--The pulse heating inert gas fusion-coulometric titration method for the determination of oxygen content GB/T 223.36-1994 Methods for chemical analysis of iron, steel and alloy. The neutral titration method for the determinaion of nitrogen content after distillation separation GB/T 223.37-2020 Iron, steel and alloy—Determination of nitrogen content—Indophenol blue spectrophotometric method after distillation separation GB/T 223.38-1985 Methods for chemical analysis of iron,steel and alloy--The anion-exchange separation-gravimetric method for the determination of niobium content GB/T 223.39-1994 Methods for chemical analysis iron,steel and alloy. The sulphochlorophenol S photometric method for the determination of niobium content GB/T 223.4-2008 Alloyed steel.Determination of manganese content.Potentiometric or visual titration method GB/T 223.40-2007 Iron, steel and alloy Determination of niobium content by the sulphochlorophenol S spectrophotometric method GB/T 223.41-1985 Methods for chemical analysis of iron,steel and alloy--The anion-exchange separation-pyrogallol photometric method for the determination of tantalum content GB/T 223.42-1985 Methods for chemical analysis of iron,steel and alloy--The anion-exchange separation-bromopyrogallol red photometric method for the determination of tantalum content GB/T 223.43-2008 Iron,steel and alloy.Determination of tungsten content.Gravimetric method and spectrophotometric method GB/T 223.45-1994 Methods for chemical analysis of iron,steel and alloy. The cupral Separation-xylidyl blue Ⅱphotometric method for the determination of magnesium content GB/T 223.46-1989 Methods for chemical analysis of iron,steel and alloy--The flame atomic absorption spectrometric method for the determination of magnesium content


Copyright ©2024 All Rights Reserved