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Preview GB/T 6730.30-1986 19.8.1986
GB/T 6730.30-1986 WITHDRAWN

Methods for chemical analysis of iron ores The diphenyl carbazide photometric method for the determination of chromium content

WITHDRAWN published on 19.8.1986

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Preview GB/T 6730.31-1986 19.8.1986
GB/T 6730.31-1986 WITHDRAWN

Methods for chemical analysis of iron ores The benzoylphenyl-hydroxylamine extraction photometric method for the determination of vanadium content

WITHDRAWN published on 19.8.1986

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Preview GB/T 6730.32-1986 19.8.1986
GB/T 6730.32-1986 WITHDRAWN

Methods for chemical analysis of iron ores The ferrous sulfate volumetric method for the determination of vanadium content

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Preview GB/T 6730.33-1986 19.8.1986
GB/T 6730.33-1986 WITHDRAWN

Methods for chemical analysis of iron ores The oscilloscopic polarography method for the determination of tin content

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Preview GB/T 6730.34-1986 19.8.1986
GB/T 6730.34-1986 WITHDRAWN

Methods for chemical analysis of iron ores The pyrocatechol violet-cetyl trimethylamine bromide photometric method for the determination of tin content

WITHDRAWN published on 19.8.1986

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Preview GB/T 6730.35-1986 19.8.1986
GB/T 6730.35-1986 WITHDRAWN

Methods for chemical analysis of iron ores The oxalic acid bis-cyclohexylidene hydragide (cuprizone) photometric method for the determination of copper content

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Preview GB/T 6730.36-1986 19.8.1986
GB/T 6730.36-1986 WITHDRAWN

Methods for chemical analysis of iron ores The flame atomic absorption spectrophotometric method for the determination of cupper content

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Preview GB/T 6730.37-1986 19.8.1986
GB/T 6730.37-1986 WITHDRAWN

Methods for chemical analysis of iron ores The 4-[(5-chloro-2-phridyl)azo]-1,3-diaminobenzene photometric method for the determination of cobalt content

WITHDRAWN published on 19.8.1986

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Preview GB/T 6730.38-1986 19.8.1986
GB/T 6730.38-1986 WITHDRAWN

Methods for chemical analysis of iron ores The nitroso-R salt photometric method for the determination of cobalt content

WITHDRAWN published on 19.8.1986

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Preview GB/T 6730.39-1986 19.8.1986
GB/T 6730.39-1986 WITHDRAWN

Methods for chemical analysis of iron ores—The dimetylglyoxime photometric method for the determination of nickel content

WITHDRAWN published on 19.8.1986

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