ISO 2899:1974
Sulphuric acid and oleums for industrial use — Determination of ammoniacal nitrogen content — Spectrophotometric method
HG/T 2784-1996
YS/T 1318.1-2019
Methods for chemical analysis of tetrammine palladium(Ⅱ)sulphate-Part 1:Determination of palladium content-Dimethylglyoxime gravimetry
KS M ISO 3332-2017
Ammonium sulphate for industrial use — Determination of ammoniacal nitrogen content — Titrimetric method after distillation
KS M ISO 3332-2017(2022)
Ammonium sulphate for industrial use — Determination of ammoniacal nitrogen content — Titrimetric method after distillation
GB/T 505-1965
Determination of mercaptan-sulfur in engine fuels (ammonia-copper sulfate method)
YS/T 1318.2-2019
Methods for chemical analysis of tetrammine palladium (Ⅱ) sulphate-Part 2: Determination of magnesium,aluminium,chromium,manganese,iron,nickel,copper,zinc,ruthenium,rhodium,silver,tin,iridium,platinum,gold,lead and bismuth contents-Inductively coupled plasma mass spectrometry
ISO 3332:1975
Ammonium sulphate for industrial use — Determination of ammoniacal nitrogen content — Titrimetric method after distillation