ABSTRACT
Bromide (Br) ion is strongly retained by anion exchange resins. This adsorption takes place on resins in the nitrate, chloride, hydroxide and acetate forms and allows Br to be separated from essentially all cationic constituents of the solutions. Co adsorbed with the bromide are, among other anions, bromate, chloride, iodide, and other anionic species of the halogens as well as phosphate and sulfate. Adsorption of bromide on basic resins is the basis of separations that have been used in conjunction with the determination of Br in rocks, waters and in biological matrices such as foodstuffs and cereals, plants and body fluids. Like the other halogen anions, bromide is not retained by strongly acid cation exchange resins, a fact which has been utilized for its separation from cationic constituents contained in natural waters and urine.
