| 阻抑动力学光度法测定痕量铜 |
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| 引用本文： | 龙莉,袁建勇,徐其亨. 阻抑动力学光度法测定痕量铜[J]. 冶金分析, 2001, 21(1): 1-1 |
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| 作者姓名： | 龙莉 袁建勇 徐其亨 |
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| 作者单位： | 昆明师专化学系!云南昆明650031,中国医学科学院医药生物技术研究所!北京100050,云南大学化学系!云南昆明650031 |
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| 基金项目： | 辽宁省自然基金资助项目（9810600202和9910300401） |
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| 摘 要： | 研究了在磷酸介质中 ,痕量铜 阻抑铬 氧化二安替比林基 -(3 -溴 )苯基甲烷显色的新指示反应及其动力学条件 ,建立了动力学光度法测定痕量铜 的新方法。ΔA与铜 浓度呈线性的范围为 1 0～ 6 0 μg/2 5mL ,相对标准偏差为1 5 1%。用于铝合金样品的分析 ,结果满意。
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| 关 键 词： | 铜Ⅱ 阻抑 动力学光度法 |
| 文章编号： | 1000-7571（2001）01-0010-03 |
Determination of trace copper by inhabition kinetic spectrophotometry |
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| LONG Li,YUAN Jian-yong,XU Qi-heng. Determination of trace copper by inhabition kinetic spectrophotometry[J]. Metallurgical Analysis, 2001, 21(1): 1-1 |
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| Authors: | LONG Li YUAN Jian-yong XU Qi-heng |
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| Abstract: | A system of inhibitory kinetic spectrophotometic determination of trace copper(Ⅱ) was investigated. In the presence of manganese (Ⅱ) and phosphoric acid, trace amounts of Cu(Ⅱ) inhibit the reaction which chromium(Ⅵ) oxidizes DAmBM to form an orange-red product. The reaction condition was studied. The linear relationship between the ΔA and the concentration of Cu(Ⅱ) is found in the range of 1.0 to 6.0 μg/25mL, and the relative standard deviation is 1.51%. The method has been applied to the determination of trace copper in aluminum alloy with satisfactory results. |
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| Keywords: | copper inhibitory kinetic spectrophotometry |
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