The Photometric Determination of Micro Amounts of Bromine in Silicate Rocks by Means of Its Catalytic Effect

Publisher Website
Google Scholar
Abstract
The catalytic action of bromide on the oxidation of to iodine iodate by potassium permanganate in sulfuric acid solution has been utilized for the microdetermination of bromine in silicate rocks. The method described consists of decomposing the silicate-rock sample by fusion with potassium hydroxide, leaching the melt with water, oxidizing bromide to bromine with potassium permanganate, extracting by benzene, and finally determining the bromine by the catalytic method. By this method, the bromine in samples with more than 0.04 ppm can be determined rapidly and accurately, using only 0.25–0.5 g of samples.