DL 422.4-1991
GB/T 4702.1-2016
Chromium metal—Determination of chromium content—The ammonium ferrous sulfate titrimetric method
HG/T 2570-2009
HG/T 2678-2015
Basic chromium sulphate for industrial use
GB/T 32784-2016
Pig iron contenting nickel—Determination of chromium content—Ammonium per sulfate-ammonium ferrous sulfate titration method
GB/T 4699.2-2008
Ferrochromium and ferrosilicochromium - Determination of chromium content - The ammonium persulfate oxidation titrimetric method and potentiometric titration method
HG/T 2678-2007
Basic chromium sulphate for industry use
GB/T 42513.1-2023
Methods for chemical analysis of nickel alloys—Part 1: Determination of chromium content—Potentiometric titration method with ammonium iron(II) sulfate
HG/T 5214~5217-2017
GB/T 36690-2018
Method of determination for 26 elements(copper,nickel,lead,zinc,cadmium,chrome etc.) content in the sludge from industrial waste liquid treatment
YS/T 1330.2-2019
Methods for chemical analysis of cobalt-chromium ceramic alloy-Part 2: Determination of chromium content-Ammonium ferrous sulfate titration
HG/T 2570-1994
HG/T 2678-1995
YS/T 1489.2-2021
GB/T 12684.10-1990
Boric acid for industrial use—Determination of chromium content
HG/T 3535-2011
HB/Z 5107.10-2004
Methods for analysis of chemical oxidation xolution for magnesium alloy-Part 10:Continual determination of manganese sulfate and magnesium sulfate content in sodium bichromate and magnesium sulfate oxidation solution by EDTA volumetric method
HB/Z 5218.18-2004
Methods for chemical analysis of aluminium alloys-Part 18:Determination of chromium content by ammonium ferrous sulfate volumetric method
GB/T 11198.1-1989
Sulphuric acid for industrial use--Determination of sulphuric acid content and calculation of free sulphur trioxide content of oleum--Titrimetric method
HB 5220.15-2008
Methods for chemical analysis of superalloys-Part 15:Determination of chromium content by ammonium persulfate oxidation-ammonium iron (Ⅱ) volumetric method