title: Spectrophotometric determination of bromate by sequential injection analysis.
abstract: A simple and rapid on-line spectrophotometric method for the determination of bromate is proposed. The method is based on the reaction of bromate and 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol (5-bromo-PADAP) with SCN(-), a red complex is formed and monitored at 550nm. The linear range found is between 0.18 and 3.00mgl(-1) with a detection limit of 0.15mgl(-1). The sampling rate was calculated to be 45 samples per hour. The proposed method has a precision of less than 0.8%.
authors.affiliation: Department of Chemistry, University of Pretoria, Pretoria 0002, South Africa.
authors.forename: J F
authors.initials: JF
authors.lastname: van Staden
authors.forename: L V
authors.initials: LV
authors.lastname: Mulaudzi
authors.forename: R I
authors.initials: RI
authors.lastname: Stefan