Methods for chemical analysis of tungsten ores and molybdenum ores—Determination of cobalt content—Polarographic method in dimethylglyoxime-sulfosalicylic acid-ammonium hydroxide-ammonium chloride system

NEPLATNÁ vydána dne 12.5.1993

Methods for chemical analysis of tungsten ores and molybdenum ores—Determination of nickel content—Polarographic method in dimethylglyoxime-sulfosalicylic acid-ammonium hydroxide-ammonium chloride system

NEPLATNÁ vydána dne 12.5.1993

Methods for chemical analysis of tungsten ores and molybdenum ores—Determination of totol sulfur content—Iodometric method after combustion

NEPLATNÁ vydána dne 12.5.1993

Methods for chemical analysis of copper ores lead ores and zinc ores—Determination of copper

NEPLATNÁ vydána dne 12.5.1993

Methods for chemical analysis of copper ores lead ores and zinc ores—Determination of tungsten content—Catalytic polarographic method in sulfuric acid-phenylhydroxy acetic acid-cinchonine-potassium chlorate system

NEPLATNÁ vydána dne 12.5.1993

Methods for chemical analysis of copper ores lead ores and zinc ores—Determination of silver content—Flame atomic absorption spectrometric method

NEPLATNÁ vydána dne 12.5.1993

Methods for chemical analysis of copper ores lead ores and zinc ores—Determination of sulfur

NEPLATNÁ vydána dne 12.5.1993

Methods for chemical analysis of copper ores lead ores and zinc ores—Determination of gallium content—Rhodamine B photometric method after butylacetate extraction

NEPLATNÁ vydána dne 12.5.1993

Methods for chemical analysis of copper ores lead ores and zinc ores—Determination of germanium content—Phenylfluorone-cetyltrimethyl ammonium bromide photometric method after carbon tetrachloride extraction

NEPLATNÁ vydána dne 12.5.1993

Methods for chemical analysis of copper ores lead ores and zinc ores—Determination of selenium content—3,3""-diaminobenzidine photometric method

NEPLATNÁ vydána dne 12.5.1993