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| Determination of Iodine in Salt based on Color Reaction between Chlorpromazine and Indate Root by Spectrophotometric Method |
| Received:April 17, 2015 Revised:May 08, 2015 |
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| DOI：doi:10.3969/j.issn.2095-1035.2015.03.017 |
| KeyWord:spectrophotometry; indate; chlorpromazine hydrochloride |
| Author | Institution |
| WANG Xiaoling |
咸阳师范学院 化学与化工学院，陕西 咸阳 |
| ZHANG Ping |
咸阳师范学院 化学与化工学院，陕西 咸阳 |
| CHEN Yan |
咸阳师范学院 化学与化工学院，陕西 咸阳 |
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| Abstract: |
| Based on the oxidation color reaction between IO3- and chlorpromazine hydrochloride, and the chromomeric extent was linear with the content of IO3-,a new spectrophotometric method for the determination of iodine was developed. Under the optimized analytical conditions, the maximum absorption wavelength was at 526 nm, the linear regression equation was y=1.214x+0.011 8 with 0.998 9 correlation coefficient, and the molal absorption coefficient was 5.2×104 L/(mol·cm). The content of iodine had a linear relationship in the range of 0~24 μg/10mL. The relative standard deviation (RSD) was 1.2%~2.2% with 97.5%~102.0% recovery. This method has easy operation, high sensitivity and good selectivity for iodine analysis in salt samples. |
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