GB/T 32784-2016
Pig iron contenting nickel—Determination of chromium content—Ammonium per sulfate-ammonium ferrous sulfate titration method
GB/T 24583.1-2019(\u82f1\u6587\u7248)
钒氮合金 钒含量的测定 硫酸亚铁铵滴定法
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
GB/T 4702.1-2016
Chromium metal—Determination of chromium content—The ammonium ferrous sulfate titrimetric method
GB/T 24583.1-2019
Vanadium-nitrogen—Determination of vanadium content—Ammonium ferrous sulfate titration method
GB/T 4701.1-2009
Ferrotitanium - Determination of titanium content - The ammonium ferric sulfate titration method
GB/T 6730.32-2013
Iron ores - Determination of vanadium content - The ammonium ferrous sulfate titrimetric method
GB/T 6730.23-2006
Iron ores - Determination of titanium content - The ferric ammonium sulfate titrimetric method
GB/T 8704.5-2020
Ferrovanadium—Determination of vanadium content—The ammonium ferrous sulfate titrimetric method and the potentiometric titrimetric method
DB51/T 2037-2015
GB/T 1506-2016
Manganese ores—Determination of manganese content—Potentiometric method and ammonium iron(Ⅱ) sulphate titrimetric method
GB/T 535-2020
Fertilizer grade ammonium sulphate
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 5220.15-2008
Methods for chemical analysis of superalloys-Part 15:Determination of chromium content by ammonium persulfate oxidation-ammonium iron (Ⅱ) volumetric method
GB/T 6730.9-2016
Iron ores—Determination of silicon content—The silicomolybdic blue spectrophotometric method reduced by ammonium ferrous sulfate
YB/T 4566.3-2016
Ferrovanadium nitride-Determination of vanadium content-Ammonium ferrous sulfate titrimetric method