Determination of aluminum at the parts per billion level by solvent extraction and flame atomic emission spectrometry
1991; Elsevier BV; Volume: 43; Issue: 3 Linguagem: Inglês
10.1016/s0026-265x(10)80008-6
ISSN1095-9149
AutoresJ. Quiñonero, Carlos Martínez Mongay, Miguel de la Guárdia,
Tópico(s)Aluminum toxicity and tolerance in plants and animals
ResumoA new method for the determination of aluminum at the parts per billion level, by N2O/ C2H2 flame emission spectrometry with prior solvent extraction with acetylacetone or 8-hydroxyquinoline in 4-methylpentan-2-one, has been performed. The influence of extraction conditions and instrumental parameters on the sensitivity, precision, and dynamic range of the emission calibration curves have been studied. The limit of detection is between 5 and 10 ppb for both ligands, the variation coefficient being 0.2 and 3% at levels of 75 and 25 ppb, respectively. The method has been applied to the determination of Al in water and the results obtained are compared with those found by the standard addition technique.
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