SN/T 0951-2010
Determination of tungsten trioxide content in ammonium paratungstate for import and export
GB/T 10116-2007
Ammonium paratungstate
SN/T 0951-2000
Method for the determination of tungsten trioxide content in ammonium paratungstate for import and export
GB/T 26033-2010
Ammonium metatungstate
GB/T 6150.1-2023
Methods for chemical analysis of tungsten concentrates—Part 1:Determination of tungsten trioxide content—Ammonium tungstate igniting gravimetric method
GB/T 10116-1988
Ammonium paratungstate
GB/T 7731.1-2021
Ferrotungsten—Determination of tungsten content—Cinchonine gravimetric method and ammonium nitrate gravimetric method
GB/T 6150.1-2008
Methods for chemical analysis of tungsten concentrates—Determination of tungsten trioxide content—The ammonium tungstate igniting gravimetric method
GB/T 23368.1-2009
Methods for chemical analysis of ammonium metatungstate - Part 1: Determination of water insoluble content - Gravimetric analysis
GB/T 23368.2-2009
Methods for chemical analysis of ammonium metatungstate - Part 2: Determination of zinc content - Flame atomic absorption spectrometry
GB/T 6150.1-1985
Methods for chemical analysis of tungsten concentrates—The ammonium tungstate igniting gravimetric method for the determination of tungsten trioxide content
YS/T 1489.2-2021
DZ/T 0453.1-2023
YS/T 833-2020
Method for chemical analysis of ammonium rhenate-Determination of beryllium,magnesium,aliminium,potassium,calcium,titanium,chromium, manganese,iron,cobalt,copper,zinc,molybdenum,lead,tungsten,sodium,tin,nickel,silicon contents-Inductively coupled plasma atomic emission spectrometry
DZ/T 0453.3-2023
DZ/T 0453.2-2023
YS/T 902-2013
Methods for chemical analysis of high purity rhenium and ammonium perrhenate—Determination of beryllium,sodium,magnesium,aluminum,potassium,calcium,titanium,chromium,manganese,iron,cobalt,nickel,copper,zinc,arsenic,molybdenum,cadmium,indium,tin,antimony,barium,tungsten,platinum,thallium,lead and bismuth content—Inductively coupled plasma mass spectrometry
DZ/T 0395.2-2022
T/CSTM 00378-2021
DZ/T 0396.3-2022