Determination of Bromide ions in Commercial Salts by Ion Chromatography

Abstract

The amounts of bromide ions in the 13 commercial salts anda reagent sodium chloride of highly purified were determined by ion chromatography with a conductivity monitor. All samples tested contained significant amounts of bromideions. Possibly because of the different methods of production or stages of purification of the salts, there were several groups classified by the amount of bromide ions; 64.6〜110μg Br^-/g NaCl, 110〜350μ g/g. 350〜650μ g/g and 650〜1500μ g/g. The recoveries of Br^- added 50, 500, 1500μ g/g to commercial salts were 62.2, 95.8 and 98.9 %, respectively.