| 铕-结晶紫缔合物分光光度法测定痕量铕 |
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| 引用本文： | 朱国辉,张韬顺,郑志勇.铕-结晶紫缔合物分光光度法测定痕量铕[J].分析测试技术与仪器,2006,12(3):181-183. |
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| 作者姓名： | 朱国辉 张韬顺 郑志勇 |
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| 作者单位： | 漳州职业技术学院,食品与生物工程系,福建,漳州,363000;漳州职业技术学院,食品与生物工程系,福建,漳州,363000;漳州职业技术学院,食品与生物工程系,福建,漳州,363000 |
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| 摘 要： | 在碱性(pH10.10)条件下,铕(Ⅲ)与结晶紫形成缔合物,表观摩尔系数为=1.8×105L/(mol.cm),铕的浓度在0.15~1.2mg/l范围内遵守比耳定律,组成摩尔比为Eu∶CV=1∶2.
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| 关 键 词： | 铕 结晶紫 缔合物 分光光度法 |
| 文章编号： | 1006-3757（2006）03-0181-03 |
| 收稿时间： | 2006-04-24 |
| 修稿时间： | 2006-07-03 |
A Sensitive Spectrophotometric Method for the Dectermination of Europium Based on the Europium-Crystal Violet Reaction |
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| ZHU Guo-hui,ZHANG Tao-shun and ZHENG Zhi-yong.A Sensitive Spectrophotometric Method for the Dectermination of Europium Based on the Europium-Crystal Violet Reaction[J].Analysis and Testing Technology and Instruments,2006,12(3):181-183. |
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| Authors: | ZHU Guo-hui ZHANG Tao-shun and ZHENG Zhi-yong |
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| Institution: | Department of Food and Biology Project, Zhangzhou Institute of Technology, Zhangzhou 363000, China;Department of Food and Biology Project, Zhangzhou Institute of Technology, Zhangzhou 363000, China;Department of Food and Biology Project, Zhangzhou Institute of Technology, Zhangzhou 363000, China |
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| Abstract: | A high sensitive spectrophotometric method was develop for the determination of Europium.Europium reacts with crystal violet in the presence of NH3(pH 10.10±0.05) to form a violet complex.The ion association complex exhibits maximum absorption at 590 nm with an apparent molar absorpbtivity of 1.8×105 L/(mol·cm).Beer'law is obeyed in the range of 0.15~1.2 mg/L for Eu3+.The molar ratio of the components of Eu:CV is 1:2.The composition of association complex has been discussed.The proposed method has been used for the determination of Eu3+ in imitative samples with satisfactory results. |
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| Keywords: | Europium crystal violet association spectrophometric determination |
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