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GB/T 7731.5-1987 (中英文版) Methods for chemical analysis of ferrotungsten--The molybdenum blue photometric method for the determination of silicon content |
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GB/T 7731.4-1987 (中英文版) Methods for chemical analysis of ferrotungsten--The molybdenum blue photometric method for the determination of phosphorus content |
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GB/T 7731.1-1987 (中英文版) Methods for chemical analysis of ferrotungsten--The cinchonine gravimetric method for the determination of tungsten content |
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GB/T 7729-1987 (中英文版) Chemical analysis of metallurgical products--General rule for spectrophotometric methods |
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GB/T 7728-1987 (中英文版) Chemical analysis of metallurgical products--General rule for flame atomic absorption spectrometric methods |
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GB/T 223.58-1987 (中英文版) Methods for chemical analysis of iron,steel and alloy--The extraction-absorption catalytic polarographic method for the determination of manganese content |
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GB/T 223.57-1987 (中英文版) Methods for chemical analysis of iron,steel and alloy--The extraction-absorption catalytic polarographic method for the determination of cadmium content |
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GB/T 223.54-1987 (中英文版) Methods for chemical analysis of iron,steel and alloy--The flame atomic absorption spectrophotometric method for the determination of nickel content |
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GB/T 223.53-1987 (中英文版) Methods for chemical analysis of iron,steel and alloy--The flame atomic absorption spectrophotometric method for the determination of copper content |
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GB/T 223.52-1987 (中英文版) Methods for chemical analysis of iron,steel and alloy--The hydroxylamine hydrochloride-iodometric method for the determination of selenium content |
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GB/T 223.51-1987 (中英文版) Methods for chemical analysis of iron,steel and alloy--The 2-(5-Bromo-2-pyridylazo)-5-diethylaminophenol photometric method for the determination of zinc content |
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GB/T 6730.8-1986 (中英文版) Methods for chemical analysis of iron ores--The potassium dichromate volumetric method for the determination of iron (Ⅱ)content |
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GB/T 6730.7-1986 (中英文版) Methods for chemical analysis of iron ores--The sulfosalicylic acid photometric method for the determination of metallic iron content |
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GB/T 6730.6-1986 (中英文版) Methods for chemical analysis of iron ores--The ferric chloride-sodium acetate volumetric method for the determination of metallic iron content |
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GB/T 6730.51-1986 (中英文版) Methods for chemical analysis of iron ores--The caustic asbestos absorption gravimetric method for the determination of carbon content in carbonate |
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GB/T 6730.50-1986 (中英文版) Methods for chemical analysisof iron ores--The gas volumetric method for the determination of total carbon content |
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GB/T 6730.49-1986 (中英文版) Methods for chemical analysis of iron ores--The flame atomic absorption spectrophotometric method for the determination of sodium and potassium content |
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GB/T 6730.48-1986 (中英文版) Methods for chemical analysis of iron ores--The dithio diantipyryl methane photometric method for the determination of bismuth content |
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GB/T 6730.36-1986 (中英文版) Methods for chemical analysis of iron ores--The flame atomic absorption spectrophotometric method for the determination of copper content |
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GB/T 6730.3-1986 (中英文版) Methods for chemical analysis of iron ores--The gravimetric method for the determination of hygroscopic moisture content in analytical samples |
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GB/T 6730.14-1986 (中英文版) Methods for chemical analysis of iron ores--The flame atomic absorption spectrophotometric method for the determination of calcium and magnesium content |
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GB/T 6730.1-1986 (中英文版) Methods for chemical analysis of iron ores--Preparation of predried test samples for chemical analysis |
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GB/T 5889-1986 (中英文版) Method of quantitative analysis of ramie chemical components |
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GB/T 5687.4-1985 (中英文版) Methods for chemical analysis of ferrochromium--The neutralization titration method for the determination of nitrogen content |
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GB/T 223.48-1985 (中英文版) Methods for chemical analysis of iron,steel and alloy--The semixylenol orange photometric method for the determination of bismuth content |
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GB/T 223.42-1985 (中英文版) Methods for chemical analysis of iron,steel and alloy--The anion-exchange separation-bromopyrogallol red photometric method for the determination of tantalumcontent |
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GB/T 223.41-1985 (中英文版) Methods for chemical analysis of iron,steel and alloy--The anion-exchange separation-pyrogallol photometric method for the determination of tantalum content |
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GB/T 223.38-1985 (中英文版) Methods for chemical analysis of iron,steel and alloy--The anion-exchange separation-gravimetric method for the determination of niobium content |
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GB/T 5124.4-1985 (中英文版) Methods for chemical analysis of hardmetals--The photometric peroxide method for the determination of titanium content |
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GB/T 5124.3-1985 (中英文版) Methods for chemical analysisof hardmetals--The potentiometric method for the determination of cobalt content |
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