Avaliação de contaminantes inorgânicos e orgânicos em álcool combustível utilizando eletroforese capilar
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Data
2006-01-01
Autores
Pereira, Elisabete A.
Tavares, Marina F.M.
Stevanato, Alessandra [UNESP]
Cardoso, Arnaldo A. [UNESP]
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Resumo
This work reports the analysis of inorganic and organic contaminants in alcohol fuel samples using capillary electrophoresis. Chloride and sulfate were analyzed in nitrate/ monochloroacetic acid at 10 mmol L -1 concentration each under indirect UV detection (210 nm). The analysis of aldehydes is based on the 216 nm detection of 3-methyl-2-benzothiazoline hydrazone adducts. The running buffer consisted of 20 mmol L -1 tetraborate, 40 mmol L -1 sodium dodecyl sufate and 12 mmol L-1 β-ciclodextrin. Both methodologies were applied to real samples indicating inorganic ion concentrations from 0.15 to 6.64 mg kg -1 and aldehydes from 32.0 to 91.3 mg L -1.
Descrição
Palavras-chave
Alcohol fuel, Capillary electrophoresis, Inorganic and organic contaminants
Como citar
Quimica Nova, v. 29, n. 1, p. 66-71, 2006.