TN116: Determination of Bromate by ISO Method 11206

Instrument Type: IC

Bromate is separated using a latexbased anion exchanger and a methanesulfonic acid eluent, followed by a simplified postcolumn reaction to form triiodide. This is subsequently detected by its UV-absorption. Because the reaction takes place at lower pH than other methods, no heating of the reaction coil is needed. These conditions prevent interference from chlorite, which is known to interfere in other bromate determination methods.