| 微乳液介质中5-Br-PADAP 光度法测定Cu(Ⅱ) |
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| 引用本文： | 侯曼玲,代军,唐贤军,沈广鑫,杨辉华,谭秀丽.微乳液介质中5-Br-PADAP 光度法测定Cu(Ⅱ)[J].矿冶工程,2002,22(4):66-68. |
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| 作者姓名： | 侯曼玲 代军 唐贤军 沈广鑫 杨辉华 谭秀丽 |
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| 作者单位： | 1.中南大学化学化工学院, 湖南长沙410083;
2.济南钢铁股份有限公司, 山东济南250000 |
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| 摘 要： | 研究了在十二烷基硫酸钠/ 正丁醇/正庚烷/ 水组成的阴离子型微乳液介质中, Cu(Ⅱ)与2-(5-溴-2-吡啶偶氮)-5-二乙氨基酚(5-Br-PADAP)的显色反应。在1 mol/ L 的NaAc 溶液中, Cu(Ⅱ)与5-Br-PADAP 形成稳定的橙红色络合物, 其最大吸收波长为550 nm, 表观摩尔系数为9.53×104 L/(mol·cm), 铜量在0～8 μg/ 25 mL 范围内符合比耳定律。本法用于烧结矿和普通钢样品中微量Cu(Ⅱ)的测定, 获得满意结果。
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| 关 键 词： | 铜 烧结矿 普通钢 微乳液 吸光光度法 |
| 收稿时间： | 2002-07-05 |
| 修稿时间： | 2002年7月5日 |
The 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol Photometric Method for the Determination of Copper in Microemulsion Media |
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| HOU Man-ling ,DAI Jun ,TANG Xian-jun ,SHEN Guang-xin ,YANG Hui-hua ,TAN Xiu-li.The 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol Photometric Method for the Determination of Copper in Microemulsion Media[J].Mining and Metallurgical Engineering,2002,22(4):66-68. |
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| Authors: | HOU Man-ling DAI Jun TANG Xian-jun SHEN Guang-xin YANG Hui-hua TAN Xiu-li |
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| Affiliation: | 1.College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, Hunan, China;
2.Jinan Iron-steel Co Ltd, jinan 250000, Shandong, China |
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| Abstract: | The indicative reaction of copper(Ⅱ)with 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol in the medium of anionic microemulsion of Sodium dodecyl sulphate /n-Butanol /n-Heptane/Water was studied.In 1 mol/L NaAC medium, the reagent reacts with Cu(Ⅱ)to form a stable orange complex, the maximum absorption of the complex lie at 550 nm with a molar absorptivity of 9.53 ×104 L·mol-1·cm-1.Beer' law is obeyed in the range of 0～8 μg/25 mL.The proposed method has been applied to the determination of microamounts of Cu(Ⅱ)in sinterore and common steel with satisfactory results. |
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| Keywords: | copper sinter ore common steel microemulsion spectrophotometry |
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