GB/T 32784-2016
Pig iron contenting nickel—Determination of chromium content—Ammonium per sulfate-ammonium ferrous sulfate titration method
DB37/T 2735-2015
SN/T 3810-2014
Determination of nitrogen content in urea and ammonium sulphate - X-ray fluorescence spectrometry
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
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
DB22/T 1693-2012
YB/T 4908.1-2021
Vanadium-aluminum alloy-Determination of vanadium content-Ammonium persulfate oxidation-ammonium ferrous sulfate titrimetric method
GB/T 4699.2-2008
Ferrochromium and ferrosilicochromium - Determination of chromium content - The ammonium persulfate oxidation titrimetric method and potentiometric titration method
GB/T 21932-2008
Nickel and ferronickel - Determination of sulphur content - Barium sulfate gravimctric method after alumina chromatographic separation
YB/T 4218-2010
Vanadium pentoxide-Determination of vanadium pentoxide content-The ammonium persulfate oxidation titrimetric method
HB/Z 5088.1-1999
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
JIS G 1258-2:2007
Iron and steel -- ICP atomic emission spectrometric method -- Part 2: Determination of manganese, nickel, chromium, molybdenum, copper, tungsten, vanadium, cobalt, titanium and niobium contents -- Dissolution in phosphoric and sulfuric acids
DB51/T 2037-2015
YS/T 539.4-2009
Methods for chemical analysis of nickel base alloy powder—Part 4:Determination of chromium content—Ammonium persulfate oxidation titration
HB/Z 5089.3-2004
Methods for analysis of plating black nickel solutions-Part 3:Continual determination of nickel sulfate and zinc sulfate content by EDTA compleximetric method
HB/Z 5089.2-2004
Methods for analysis of plating black nickel solutions-Part 2:Continual determination of nickel sulfate and zinc sulfate content by magnesium sulfate back titrimetric EDTA volumetric method
HB/Z 5089.1-2004
Methods for analysis of plating black nickel solutions-Part 1:Determination of ammonium nickel sulfate content by ion selective electrode method
HB/Z 5088.2-1999
KS M ISO 3332-2017
Ammonium sulphate for industrial use — Determination of ammoniacal nitrogen content — Titrimetric method after distillation