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Please use this identifier to cite or link to this item: http://repositorio.ufba.br/ri/handle/ri/14863

Title: Determinação espectrofotométrica de sulfato em álcool etílico combustível empregando dibromosulfonazo III
Other Titles: Química Nova
Authors: Almeida, Jorge Santos de
Soares, Vitória Regina Bispo
Andrade, Camila J.
Silva, José Domingos S. da
Dantas, Alailson Falcão
Rocha, Gisele Olímpio da
Teixeira, Leonardo Sena Gomes
Keywords: Sulphate;Ethanol fuel;Spectrophotometry
Issue Date: 2013
Abstract: A sensitive spectrophotometric method was developed for sulphate determination in automotive ethanol fuel. The method based on the reaction of the analyte with barium-dibromosulphonazo(III) complex lead to a decrease in the magnitude of the absorbance signals monitored at 649 nm. No sample pretreatment is required and the proposed method allows sulphate determination in the 0.45 - 6.50 mg L-1 range with R.S.D. < 2% and limit of detection of 0.14 mg L-1. The method has been successfully applied for sulphate determination in automotive ethanol fuel and the results agreed with the reference chromatographic method.
Description: p. 880-884
URI: http://repositorio.ufba.br/ri/handle/ri/14863
ISSN: 0100-4042
Appears in Collections:Artigos Publicados em Periódicos (Quimica)

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