Otro
Avaliação de contaminantes inorgânicos e orgânicos em álcool combustível utilizando eletroforese capilar
Registro en:
Química Nova. Sociedade Brasileira de Química, v. 29, n. 1, p. 66-71, 2006.
0100-4042
10.1590/S0100-40422006000100014
S0100-40422006000100014
S0100-40422006000100014.pdf
Autor
Pereira, Elisabete A.
Tavares, Marina F. M.
Stevanato, Alessandra
Cardoso, Arnaldo Alves
Resumen
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 beta-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. Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)