2013
DOI: 10.1590/s0100-40422013000600024
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Determinação espectrofotométrica de sulfato em álcool etílico combustível empregando dibromosulfonazo III

Abstract: Recebido em 23/8/12; aceito em 20/12/12; publicado na web em 15/4/13 SPECTROPHOTOMETRIC DETERMINATION OF SULPHATE IN ETHANOL FUEL USING DIBROMOSULPHONAZO III. 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 … Show more

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