An ion chromatographic method for measuring < 5 micrograms/L bromate ion in drinking water.
Many laboratories using the best available technology (ion chromatography) can only reliably measure BrO3- at the 10-20 micrograms/L level. Typically, BrO3- peak resolution is not a problem; however, finished water can contain appreciable amounts of Cl- that can interfere with BrO3- measurement using conductivity detection. Chlorpromazine is a selective reagent that does not react with Cl- and is an ideal postcolumn detection chemistry following IC separation. The chlorpromazine postcolumn method is linear over the 0.5-100 micrograms/L range.
Walters
B D
BD
Miami University, Oxford, Ohio 45056, USA.
Gordon
G
G
Bubnis
B
B
D001959:Bromates / Q000032:analysis*; D002712:Chlorides / Q000032:analysis; D002852:Chromatography, Ion Exchange; D007202:Indicators and Reagents; D014881:Water Supply / Q000032:analysis*
D001959:Bromates; D002712:Chlorides; D007202:Indicators and Reagents