SPECTROPHOTOMETRIC DETERMINATION OF COPPER AND BISMUTH IN LEAD-CONTAINING ALUMINUM ALLOYS. I. SPEARATE DETERMINATION

Journal Article · Sun Jan 01 04:00:00 EST 1961 · Ricerca sci.

OSTI ID:4785086

de Angelis, G; Geradri, M

Results obtained in the separate determination of copper (1 to 5%) and bismuth (0.1 to 1%) in an aluminum alloy, in the presence of lead (1%), iron (0.1%), and traces of arsenic, antimony, and cadmium, are reported. The determination at lambda = 435 m mu oc copper diethyldithiocarbamate, extracted with chloroform from an aqueous solution at pH 8.8 containing ammonium citrate and sodium ethylenediaminotetraacetate, is possible with an error of plus or minus 0.073 referred to the copper percentage. Bismuth can be determined on another portion of the solution of the alloy, at 460 m mu in the form of an iodide complex in the presence of sulfur dioxide, after an extraction at pH 1 to 1.1 from the aqueous solution containing tartaric acid and cupferron, and a successive extraction from the chloroform solution with 2N sulfuric acid: the error is plus or minus 0.023 on the bismuth percentage. For the bismuth also a determination lambda = 375 m mu was attempted, in the presence of hydrobromic acid and ascorbic acid; the mean error is plus or minus 0.020 on the bismuth percentage, with a precision higher than that of the other method. (auth)

• Research Organization: Consiglio Nazionale delle Ricerche, Rome and Universita, Rome
• NSA Number: NSA-16-014664
• OSTI ID: 4785086
• Journal Information: Ricerca sci., Journal Name: Ricerca sci. Vol. Vol: (2), 1
• Country of Publication: Country unknown/Code not available
• Language: Italian

Related Subjects

ACIDITY
ALUMINUM ALLOYS
AMINES
AMMONIUM COMPOUNDS
ANTIMONY
ARSENIC
ASCORBIC ACID
BISMUTH
BISMUTH IODIDES
CADMIUM
CARBAMATES
CHEMISTRY
CHLORINATED HYDROCARBONS
CHLOROFORM
CITRIC ACID
COPPER
CUPFERRON
EDTA
ERRORS
HYDROBROMIC ACID
IMPURITIES
IRON
LEAD
ORGANIC ACIDS
ORGANIC SULFUR COMPOUNDS
PHOTOMETRY
QUANTITATIVE ANALYSIS
SEPARATION PROCESSES
SOLUTIONS
SPECTROSCOPY
SULFUR OXIDES
SULFURIC ACID
TARTARIC ACID
TRACE AMOUNTS
VITAMINS
WATER