GB/T 32784-2016
Pig iron contenting nickel—Determination of chromium content—Ammonium per sulfate-ammonium ferrous sulfate titration method
YB/T 4908.1-2021
Vanadium-aluminum alloy-Determination of vanadium content-Ammonium persulfate oxidation-ammonium ferrous sulfate titrimetric method
DB37/T 2735-2015
YB/T 4218-2010
Vanadium pentoxide-Determination of vanadium pentoxide content-The ammonium persulfate oxidation titrimetric method
SN/T 3810-2014
Determination of nitrogen content in urea and ammonium sulphate - X-ray fluorescence spectrometry
GB/T 4699.2-2008
Ferrochromium and ferrosilicochromium - Determination of chromium content - The ammonium persulfate oxidation titrimetric method and potentiometric titration method
QJ/Z 103-1982
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
JB/T 9499.3-1999
Method for chemical analysis of constantan resistance alloy The ammonium persulfate oxidation-ammonium ferrous sulfate titrimetric method for the determination of manganese content
HB/Z 5107.8-2004
Methods for analysis of chemical oxidation solution for magnesium alloy-Part 8:Determination of ammonia sulfate contentin glacial acetic acid oxidation solution by barium sulfate gravimetric method
DB51/T 2037-2015
HB/Z 5107.14-2004
Methods for analysis of chemical oxidation solution for magnesium alloy-Part 14:Determination of ammonia sulfate content in potassium bichromate and magnesium sulfate oxidation solution by potentiometric method
JB/T 9552.2-1999
DZ/T 0064.31-2021
Methods for analysis of groundwater quality—Part 31:Determination of manganese content—Ammonium persulfate spectrophotometry
YS/T 807.4-2012
Chemical analysis methods of aluminum hardeners—Part 4:Determination of chromium content—The ammonium persulfate oxidation-ammonium ferrous sulfate titrimetric method
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
GB/T 223.13-2000
Methods for chemical analysis of iron,steel and alloy--The ammonium ferrous sulfate titrationmethod for the determination of vanadium content
YS/T 539.4-2009
Methods for chemical analysis of nickel base alloy powder—Part 4:Determination of chromium content—Ammonium persulfate oxidation titration
DB34/T 2580-2015
KS M ISO 3332-2017
Ammonium sulphate for industrial use — Determination of ammoniacal nitrogen content — Titrimetric method after distillation