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https://repositorio.ufba.br/handle/ri/14863
metadata.dc.type: | Artigo de Periódico |
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 |
metadata.dc.creator: | 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 |
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. |
Keywords: | Sulphate Ethanol fuel Spectrophotometry |
metadata.dc.publisher.country: | Brasil |
metadata.dc.rights: | Acesso Aberto |
URI: | http://repositorio.ufba.br/ri/handle/ri/14863 |
Issue Date: | 2013 |
Appears in Collections: | Artigo Publicado em Periódico (Química) |
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