| 高选择性催化光度法测定痕量铜的研究 |
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| 引用本文： | 郭亚洁,王广健.高选择性催化光度法测定痕量铜的研究[J].光谱实验室,2001,18(2):237-240. |
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| 作者姓名： | 郭亚洁 王广健 |
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| 作者单位： | 淮北煤炭师范学院化学系 |
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| 基金项目： | 淮北煤炭师范学院科研资金资助 |
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| 摘 要： | 本文研究了在柠檬酸介质中 ,铜催化抗坏血酸还原甲基红的新指示反应及动力学条件 ,并测定了反应的活化能 ,建立了高选择性测定痕量铜的新方法。铜的测定线性范围为 0— 140 ng/ 2 5m L,检出限为 1.2 1× 10 -11g/ m L ,用于铝合金及人发样中铜的测定 ,结果令人满意。
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| 关 键 词： | 催化光度法 甲基红 铜 抗坏血酸 痕量分析 铝合金 人发 |
| 文章编号： | 1004-8138(2001)02-0237-04 |
| 修稿时间： | 2000年6月28日 |
Study on Determination of Trace Copper with Catalytic Spectropho tometry |
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| GUO Ya-jie,Wang Guang-jian.Study on Determination of Trace Copper with Catalytic Spectropho tometry[J].Chinese Journal of Spectroscopy Laboratory,2001,18(2):237-240. |
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| Authors: | GUO Ya-jie Wang Guang-jian |
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| Abstract: | It was studied that the new indicative reaction which copper(Ⅱ) catalyzes ascor bic acid to reduce methyl red in citric acid medium.Apparent activation energy was determined and a new method highly selective,catalytic spectrophotometry for the determination of trace copper(Ⅱ) was established.The concentration of copper determined is in the range of 0—140ng/25mL.The detection limit is 1.21×10 -11g/mL.The method has been used for determination of trace copper in human hair and aluminium alloy samples with satisfactory results. |
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| Keywords: | Catalytic Spectrophotometry Methyl Red Copper Ascorbic Acid |
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