Abstract
A simple, fast and sensitive analytical method was developed for speciation of iodine in edible salts and human urine samples by short column ion chromatography coupled with inductively plasma mass spectrometry. Using a commercial anionic column of 50 mm length and 8 mmol L−1 of (NH4)2CO3 as the mobile phase, the total separation time was only 170 s, and limits of detection of 0.015 and 0.081 μg L−1 for IO3− and I−. Satisfactory relative standard deviations for parallel measurements and linear calibration curves were both obtained. Finally, the method was successfully applied to certified standard reference materials and practical samples analysis.
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