| 催化动力学分光光度法同时测定铜和铁 |
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| 引用本文： | 何池洋,吴根华,程琼,陈友存.催化动力学分光光度法同时测定铜和铁[J].光谱学与光谱分析,2004,24(6):730-732. |
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| 作者姓名： | 何池洋 吴根华 程琼 陈友存 |
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| 作者单位： | 安庆师范学院化学系,安徽,安庆,246011;安庆师范学院化学系,安徽,安庆,246011;安庆师范学院化学系,安徽,安庆,246011;安庆师范学院化学系,安徽,安庆,246011 |
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| 基金项目： | 国家自然科学基金 (2 0 1 71 0 0 1 )，安徽省教育厅自然科学科研基金(2 0 0 2kj2 0 0 )资助项目 |
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| 摘 要： | 研究发现 :在硫酸介质中Cu(Ⅱ )和Fe(Ⅲ )能同时催化溴酸钾氧化酸性铬蓝K的褪色反应 ,但二者存在一定的速率差异 ,反应速率常数之比随时间而变化 ,且吸光度的加和性不佳。运用了三层Levenberg Marquardt优化BP神经网络处理实验数据 ,实现了Cu(Ⅱ ) ,Fe(Ⅲ )的催化动力学分析法同时测定。研究了最佳反应和测定条件。用于合成样品和人发中铜和铁的测定 ,结果满意
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| 关 键 词： | 铜(Ⅱ) 铁(Ⅲ) 催化动力学光度法 同时测定 人工神经网络 |
| 文章编号： | 1000-0593(2004)06-0730-03 |
| 修稿时间： | 2003年3月10日 |
Simultaneous Determination of Copper and Iron by Catalytic Kinetic Spectrophotometry |
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| Chi-yang He,Gen-hua Wu,Qiong Cheng,You-cun Chen.Simultaneous Determination of Copper and Iron by Catalytic Kinetic Spectrophotometry[J].Spectroscopy and Spectral Analysis,2004,24(6):730-732. |
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| Authors: | Chi-yang He Gen-hua Wu Qiong Cheng You-cun Chen |
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| Institution: | Department of Chemistry-Anqing Normal College, Anqing 246011, China. |
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| Abstract: | A simultaneous catalytic effect copper (II) and iron (III) on the oxidation of acid chrome blue K by potassium bromate in dilute sulfuric acid medium was observed. But there was an obvious difference in their reaction rates, and the ratio of the reaction constant changed with time. And their spectral addiitive properties were not satisfactory. The simultaneous determination of copper and iron by catalytic kinetic spectrophotometric method was realized by using a three-layer Levenberg-Marquardt BP neural network to cope with the experimental data. The optimum conditions of reaction and determination were studied. The calculation results of the determination in synthetic samples and human hair were satisfactory. |
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