Abstract
A simple and rapid method for determination of iodine in highly iodized organic substances is described. The method involves oxygen flask combustion of the sample to be analyzed, formation of iodine in a molecular form, and use of a special multicomponent absorption solution containing sodium thiosulfate, phosphate buffer, pH 7.1–7.2, and starch. The quantity of absorbed iodine is determined by iodometric titration of the excess sodium thiosulfate in the absorption solution. The method affords a drastic reduction in the total length of analysis. The relative error of determination is not greater than 1%.
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