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Determination of Iodide in Sulfuric Acid Aqueous Solution by the Ion Chromatography with UV Detection

Yang-Soon Park

Abstract

Ion chromatography was applied to determine iodide remained in sulfuric acid aqueous solution after adsorption procedure. Iodide was determined in 0.25 M, 0.5 M and 1 M sulfuric acid solution on time variation. Because sulfuric acid in solution plays as an oxidizer, the concentration of iodide decreased with increasing concentration or sulfuric acid. Thereafter, sulfuric acid was neutralized with sodium hydroxide. Good linearity(r=0.99999) was obtained at the range of 0-20 mg/L 1 in 0.5 M sodium sulfate matrix.

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Key concepts: Sulfuric acid, Chemistry, Aqueous solution, Iodide, Sodium hydroxide, Inorganic chemistry, Ion chromatography, Sodium sulfate