| 催化动力学光度法测量环境样品中的痕量铜 |
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| 引用本文： | 颜萍菲.催化动力学光度法测量环境样品中的痕量铜[J].襄樊学院学报,2005,26(2):45-47. |
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| 作者姓名： | 颜萍菲 |
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| 作者单位： | 襄樊学院,化学与生物科学系,湖北,襄樊,441053 |
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| 摘 要： | 研究了在磷酸介质中,铜(Ⅱ)催化过氧化氢氧化偶氮砷(Ⅲ)褪色反应的适宜条件与影响因素,建立了动力学光度法测量痕量铜的新方法.该方法的线性范围为0-6μg/25mL,间接摩尔吸光系数为ε=1.75×105L.mol-1·cm-1.标准加入回收率为92.5%.用于水样品和发样品分析,取得满意效果.
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| 关 键 词： | 铜（Ⅱ） 偶氮砷（Ⅲ） 环境样品 催化动力学光度法 |
| 文章编号： | 1009-2854(2005)02-0045-03 |
| 修稿时间： | 2004年12月21 |
Determination of Trace Copper(Ⅱ) in the Environmental Sample by Catalytic Kinetic Spectrophotometry |
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| YAN Ping-fei.Determination of Trace Copper(Ⅱ) in the Environmental Sample by Catalytic Kinetic Spectrophotometry[J].Journal of Xiangfan University,2005,26(2):45-47. |
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| Authors: | YAN Ping-fei |
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| Abstract: | This paper discusses the favorable conditions and influential factors in the discolouring reaction that C112+ is the catalyst of hydrogen peroxide and also the oxydation of arsenazo in the medium of H3PO4, and then establishes a new approach to the determination of trace copper by kinetic spectrophotometry. And the proposed method, in which the linear range of the determination is 0-6ug/25ml, has been used in the analysis of tap water and well water and achieved satisfactory effects as well. |
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