| 壳聚糖修饰电极对溴、碘离子的测定 |
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| 引用本文： | 曾艳,王丽荣,李雅岚,陆光汉.壳聚糖修饰电极对溴、碘离子的测定[J].武汉化工学院学报,2005,27(2):7-9. |
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| 作者姓名： | 曾艳 王丽荣 李雅岚 陆光汉 |
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| 作者单位： | 华中师范大学化学学院，华中师范大学化学学院，华中师范大学化学学院，华中师范大学化学学院 湖北武汉430079，湖北武汉430079，湖北武汉430079，湖北武汉430079 |
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| 基金项目： | 湖北省自然科学基金项目(99J120) |
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| 摘 要： | 采用滴涂法制备了壳聚糖修饰电极，并分别用于Br^-和I^-的溶出伏安法测定．在酸性溶液中，壳聚糖分子中的-NH2发生质子化，对Br^-和I^-具有很强的吸附作用．本文利用该特性研究了溶出伏安法测定Br^-和I^-的最佳条件，并探讨了两种离子的电极过程机理．该法用于工业废水中溴和华素片中碘的含量的测定，结果满意．
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| 关 键 词： | 壳聚糖 化学修饰电极 Br^- I^- 溶出伏安法 |
| 文章编号： | 1004-4736(2005)02-0007-03 |
| 修稿时间： | 2004年8月30日 |
Determination of Br-and I- on chitosan modified electrode |
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| ZENG Yan,WANG Lirong,LI Yalan,LU Guanghan.Determination of Br-and I- on chitosan modified electrode[J].Journal of Wuhan Institute of Chemical Technology,2005,27(2):7-9. |
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| Authors: | ZENG Yan WANG Lirong LI Yalan LU Guanghan |
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| Abstract: | A novel stripping voltammetry was developed for the determination of Br~-and I~-,with a glassy carbon electrode modified with chitosan by dropcoating method as a working electrode.In low pH solution,the high sensitivity was based on adsorption between the protonated acetylamide groups of chitosan and halide ions.Choices of several optimal experimental parameters were discussed,and the mechanisms of two electrode reactions were studied.These methods were applied to detect bromide content in wastewater and iodide in cydiodine tablets,and the results are satisfactory. |
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| Keywords: | chitosan chemicallymodified electrode Br~- I~- stripping voltammetry |
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