Determination of the Cobalt Content of a Solution by Means of Differential Spectrophotometry; DETERMINATION DE LA TENEUR EN COBALT D'UNE SOLUTION PAR SPECTRO- PHOTOMETRIE DIFFERENTIELLE

Technical Report · Wed Jan 01 04:00:00 EST 1964

OSTI ID:4032382

Brueck, A; Lauer, K F; LeDuigou, Y

Differential spectrophotometric measurements are made of the coloration of two solutions differing in their cobalt content by about 55 mu g. The standard colorimetric procedure with ammonium thiocyanate as reagent is used. The calibration factor can be measured with a precision of plus or minus 0.77%. Depending on the number of measurements made very good precision is obtained. The statistical treatment of the results reported for 50 mg cobalt sample gives a standard deviation on the mean value (95% confidence level) of about 0.06 to 0.1%. The absolute value of course depends on the precision and accuracy with which standard cobalt solutions can be prepared. The method can be applied to other cobalt contents using a calibration factor based on the corresponding new reference solutions. (auth)

• Research Organization: European Atomic Energy Community. Joint Nuclear Research Center, Ispra, Italy and European Atomic Energy Community. Central Nuclear Measurements Bureau, Geel, Belgium
• NSA Number: NSA-18-019842
• OSTI ID: 4032382
• Report Number(s): EUR-581.f
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

AMMONIUM COMPOUNDS
CHEMISTRY
COBALT
COLOR
CYANIDES
ORGANIC SULFUR COMPOUNDS
PHOTOMETRY
QUANTITATIVE ANALYSIS
SOLUTIONS
SPECTROSCOPY
STANDARDS
STATISTICS