GB/T 664-2011
Chemical reagent - Iron(Ⅱ)sulfate heptahydrate
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
GB/T 661-2011
Chemical reagent - Ammonium iron(II) sulfate hexahydrate
GB/T 664-1993
Chemical reagent—Iron(Ⅱ) sulfate heptahydrate
GB/T 8704.5-2020
Ferrovanadium—Determination of vanadium content—The ammonium ferrous sulfate titrimetric method and the potentiometric titrimetric method
YB/T 4566.3-2016
Ferrovanadium nitride-Determination of vanadium content-Ammonium ferrous sulfate titrimetric method
GB/T 661-1992
Chemical reagent--Ammonium iron (Ⅱ) sulfate hexahydrate
YB/T 4726.4-2021
Ferric-containing dust and sludge—Determination of siliconcontent—Silicomolybdic blue spectrophotometric methodreduced by ammonium ferrous sulfate
GB/T 8704.5-2007
Ferrovanadium—Determination of vanadium content—The ammonium ferrous sulfate titrimetric method and the potentiometric titrimetric method