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GB/T 14352.22-2021 （中英文版） Methods for chemical analysis of tungsten ores and molybdenum ores -- Part 22：Determination of antimony content -- Hydride generation atomic fluorescence spectrometry |
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GB/T 14352.21-2021 （中英文版） Methods for chemical analysis of tungsten ores and molybdenum ores -- Part 21: Determination of arsenic content -- Hydride generation atomic fluorescence spectrometry |
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GB/T 14352.20-2021 （中英文版） Methods for chemical analysis of tungsten ores and molybdenum ores -- Part 20：Determination of niobium，tantalum，zirconium，hafnium and 15 rare earth elements content -- Inductively coupled plasma mass spectrometry |
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GB/T 14352.19-2021 （中英文版） Methods for chemical analysis of tungsten ores and molybdenum ores -- Part 19: Determination of bismuth, cadmium, cobalt, copper, iron, lithium, nickel, phosphorus, lead, strontium, vanadium and zinc content -- Inductive-coupled plasma atomic emission spe |
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GB/T 5121.28-2021 （中英文版） Methods for chemical analysis of copper and copper alloys—Part 28：Determination of chromium,iron,manganese,cobalt,nickel,zinc,arsenic,selenium,silver,cadmium,tin,antimony,tellurium,lead and bismuth content—Inductively coupled plasma-mass spectrometry |
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GB/T 29732-2021 （中英文版） Surface chemical analysis—Medium resolution auger electron spectrometers—Calibration of energy scales for elemental analysis |
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GB/T 41064-2021 （中英文版） Surface chemical analysis—Depth profiling—Method for sputter rate determination in X-ray photoelectron spectroscopy, Auger electron spectroscopy and secondary-ion mass spectrometry sputter depth profiling using single and multi-layer thin films |
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GB/T 12690.8-2021 （中英文版） Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides—Part 8:Determination of sodium content |
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GB/T 40912-2021 （中英文版） Textiles—Quantitative chemical analysis—Mixtures of polyesteramide with certain other fibers |
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GB/T 16399-2021 （中英文版） Methods for chemical analysis of clay |
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GB/T 12690.4-2021 （中英文版） Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides—Part 4: Determination of oxygen and nitrogen contents—Impulse-infrared absorption and impulse-thermal conductivity method |
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GB/T 40798-2021 （中英文版） Chemical analysis method of ion-adsorption rare earth ore—Determination of total rare earth contents—Inductively coupled plasma mass spectrometry |
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GB/T 40795.2-2021 （中英文版） Chemical analysis methods of lanthanum-cerium metals and their compounds—Part 2:Determination of rare earth content |
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GB/T 40795.1-2021 （中英文版） Chemical analysis method of lanthanum-cerium metals and their compounds—Part 1:Determination of cerium content—Ammonium ferrous sulfate titration method |
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GB/T 18115.4-2021 （中英文版） Chemical analysis methods of rare earth impurities in rare earth metals and their oxides -- Part 4: Determination of lanthanum, cerium, praseodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium and yt |
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GB/T 12690.7-2021 （中英文版） Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides—Part 7: Determination of silicon content |
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GB/Z 39124-2020 （中英文版） Method for chemical analysis of lead concentrates—Determination of antimony content—Ce(SO4)2 titration method |
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GB/T 39138.1-2020 （中英文版） Methods for chemical analysis of gold nickel chromium iron silicon boron alloys—Part 1：Determination of gold content—Potentiometric titration using ferrous sulfate |
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GB/T 39138.2-2020 （中英文版） Methods for chemical analysis of gold nickel chromium iron silicon boron alloys—Part 2：Determination of nickel content—Dimethylglyoxime gravimetric method |
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GB/T 39138.3-2020 （中英文版） Methods for chemical analysis of gold nickel chromium iron silicon boron alloys—Part 3：Determination of chromium, iron, silicon and boron contents—Inductively coupled plasma atomic emission spectrometry |
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GB/T 39143-2020 （中英文版） Methods for chemical analysis of gold-arsenic alloys—Determination of arsenic content—Inductively coupled plasma atomic emission spectrometry |
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GB/T 34609.2-2020 （中英文版） Method for chemical analysis of rhodium compounds—Part 2: Determination of silver,gold,platinum...potassium,chromium and silicon contents—Inductively coupled plasma atomic emission spectrometry |
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GB/T 20975.6-2020 （中英文版） Methods for chemical analysis of aluminium and aluminium alloys—Part 6: Determination of cadmium content |
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GB/T 20975.21-2020 （中英文版） Methods for chemical analysis of aluminium and aluminium alloy—Part 21: Determination of calcium content |
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GB/T 20975.17-2020 （中英文版） Methods for chemical analysis of aluminium and aluminium alloys—Part 17: Determination of strontium content |
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GB/T 8151.22-2020 （中英文版） Methods for chemical analysis of zinc concentrates—Part 22: Determination of zinc, copper, lead,iron,aluminium ,calcium and magnesium contents—Wavelength dispersive X-ray fluorescence spectrometric method |
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GB/T 8151.23-2020 （中英文版） Methods for chemical analysis of zinc concentrates—Part 23: Determination of mercury content—Solid sampling and direct mercury analysis method |
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GB/T 20975.37-2020 （中英文版） Methods for chemical analysis of aluminium and aluminium alloys—Part 37:Determination of niobium content |
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GB/T 20975.4-2020 （中英文版） Methods for chemical analysis of aluminium and aluminium alloys—Part 4:Determination of iron content |
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GB/T 20975.5-2020 （中英文版） Methods for chemical analysis of aluminium and aluminium alloys—Part 5：Determination of silicon content |
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