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%.
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| http://dx.doi.org/10.1016/j.talanta.2004.04.031 | DOI Listing |
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