Abstract
A fiber-optic sensor system is described for the on-line determination of bromide in spent brine. In this method, the bromide is selectively oxidized to bromine in a flow reactor containing a packed bed of chloramine-T; the optical absorption of the resulting bromine is then used for quantification. The technique exhibits a dynamic range from 20 to 5000 mg 1 −1 bromide, provides continuous readout, is not affected by the presence of high concentrations of chloride and has a response time of about 2 min.
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