HIGH-PRECISION DETERMINATIONS BY MEANS OF HIGH-ABSORBANCY SPECTRO- PHOTOMETRIC METHOD. APPLICATION TO THE DETERMINATION OF COBALT IN ALUMINUM | Zendy

Oscar Menis | Zendy

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HIGH-PRECISION DETERMINATIONS BY MEANS OF HIGH-ABSORBANCY SPECTRO- PHOTOMETRIC METHOD. APPLICATION TO THE DETERMINATION OF COBALT IN ALUMINUM

Author(s) -

Oscar Menis

Publication year - 1959

Publication title -

osti oai (u.s. department of energy office of scientific and technical information)

Language(s) - English

Resource type - Reports

DOI - 10.2172/4118257

Subject(s) - cobalt , analytical chemistry (journal) , chemistry , accuracy and precision , spectrophotometry , coefficient of variation , aluminium , chromatography , mathematics , inorganic chemistry , statistics , organic chemistry

High-absorbancy spectrophotometry was applied to the precise determination of about 0.15% cobalt in aluminum by the 1-(2-pyridylazo)-2- naphthol method. The absorbancies of sample aliquots were measured versus a standard containing 50 mu g of cobalt. The relative concentration error for a single measurement, assuming a 1% transmittancy error, is 0.93% and the coefficient of variation of 5 cobalt determinations is 0.5%. (auth

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