Influences of the matrix effect in the sensibility of cobalt measurement by atomic absorption
Description
The interferences caused by iron, aluminium, calcium, magnesium, manganese, copper, nickel, zinc, sodium and potassium in the determination of cobalt by atomic absorption, were studied. The concentrations of cobalt were varied in the range of 1 to 800 μg/ml and the concentrations of the interferents in the proportions occuring normally in soils, rocks, sediments, geological material in general, alloys, caustic liquors etc. To study the flame composition effect, the flame region effect and also the effect of different interferent concentrations on the cobalt for each selected spectral line, an air-acetilene flame was utilized. As an application of this study the effect was shown of 'simulated soil matrices' with respect to the interference of iron on cobalt
Availability note (English)
MF available from INIS under the Report Number.Abstract (Portuguese)
Foram estudadas as interferencias causadas pelo ferro, aluminio, calcio, magnesio, manganes, cobre, niquel, zinco, sodio e potassio, sobre a medida do cobalto por absorcao atomica. As concentracoes de cobalto foram variadas de 1-800μg/ml bem como a dos elementos interferentes, nas proporcoes em que normalmente ocorrem em solos, rochas, sedimentos, materiais geologicos em geral, ligas, licores causticos, etc. Utilizando-se uma chama ar-acetileno, estudou-se o efeito da composicao de chama, o efeito da regiao de chama e o efeito das concentracoes variadas dos interferentes sobre o cobalto, para cada linha espectral selecionada. Como aplicacao do estudo realizado, procurou-se verificar o efeito de 'matrizes simuladas' de solo, na interferencia do ferro sobre o cobaltoFiles
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Additional details
Additional titles
- Original title (Portuguese)
- Influencias do efeito matriz na sensibilidade da medida do cobalto por absorcao atomica
Publishing Information
- Imprint Pagination
- 142 p.
- Report number
- INIS-mf--5230
INIS
- Country of Publication
- Brazil
- Country of Input or Organization
- Brazil
- INIS RN
- 10481621
- Subject category
- S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
- Resource subtype / Literary indicator
- Thesis
- Descriptors DEI
- ABSORPTION SPECTROSCOPY; CLAYS; COBALT; PHOTOMETRY; SAND; SILICATES; SOILS; SPECTROPHOTOMETRY; TRACE AMOUNTS
- Descriptors DEC
- ELEMENTS; METALS; MINERALS; OXYGEN COMPOUNDS; SILICON COMPOUNDS; SPECTROSCOPY; TRANSITION ELEMENTS