| 孔雀绿-氯胺T体系新催化光度法测定痕量碘的研究 |
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| 引用本文： | 李建国,魏永前,沈康.孔雀绿-氯胺T体系新催化光度法测定痕量碘的研究[J].光谱学与光谱分析,2001,21(5):726-728. |
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| 作者姓名： | 李建国 魏永前 沈康 |
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| 作者单位： | 苏州大学化学化工系, |
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| 摘 要： | 本文建立了基于在稀盐酸介质中氯胺T氧化孔雀绿这一新指示反应催化光度法测定痕量碘的新方法。该法的检出限为 4 9× 10 -10 g·mL-1,线性范围为 0～ 4 8μg·L-1。此法灵敏、简便、选择性好、用于食品中微量碘的测定 ,结果满意。
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| 关 键 词： | 催化光度法 孔雀绿 氯胺 碘 测定 痕量分析 食品 |
| 文章编号： | 1000-0593(2001)05-0726-03 |
| 修稿时间： | 1999年10月29 |
Determination of Trace Iodine Based on Kinetic-spectrophotometry with Malachite Green-chloramine T System |
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| J G Li,Y Q Wei,K Shen.Determination of Trace Iodine Based on Kinetic-spectrophotometry with Malachite Green-chloramine T System[J].Spectroscopy and Spectral Analysis,2001,21(5):726-728. |
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| Authors: | J G Li Y Q Wei K Shen |
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| Institution: | Department of Chemistry and Chemical Engineering, Suzhou University, Suzhou 215006, China. |
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| Abstract: | In this paper, a new kinetic-spectrophotometric method for the determination of trace amount of iodine has been proposed. It is based on the iodine catalysed the reaction of malachite green oxidized by chloramine T in hydrochloric acid medium. The method is sensitive, simple and with good selectivity. The linear range of determination of iodine is 0-48 micrograms.L-1, the detection limit is 4.9 x 10(-10) g.mL-1. The method has been used for the determination of trace amount of iodine in food with satisfactory results. |
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| Keywords: | Kinetic-spectrophotometry Malachite green Chloramine T Iodine |
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