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

NEPLATNÁ vydána dne 19.8.1986

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

NEPLATNÁ vydána dne 19.8.1986

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

NEPLATNÁ vydána dne 19.8.1986

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

NEPLATNÁ vydána dne 19.8.1986

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

NEPLATNÁ vydána dne 19.8.1986

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

NEPLATNÁ vydána dne 19.8.1986

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

NEPLATNÁ vydána dne 19.8.1986

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

NEPLATNÁ vydána dne 19.8.1986

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

NEPLATNÁ vydána dne 19.8.1986

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

NEPLATNÁ vydána dne 19.8.1986