| 六元瓜环对铅离子的捕集性能研究 |
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| 引用本文： | 卢小军,薛赛凤,陶朱,祝黔江.六元瓜环对铅离子的捕集性能研究[J].贵州大学学报(自然科学版),2009,26(2):1-4,9. |
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| 作者姓名： | 卢小军 薛赛凤 陶朱 祝黔江 |
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| 作者单位： | 贵州省大环化学与超分子化学重点实验室,贵州,贵阳,550025;贵州大学应用化学研究所,贵州,贵阳,550025 |
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| 基金项目： | 国家自然科学基金，贵州省省长基金(黔科合:十五字 |
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| 摘 要： | 利用原子吸收光谱法研究了六元瓜环（Q6]）对Pb（Ⅱ）离子的捕集性能，分别考察了体系pH影响因素，捕集动力学、热力学性质。结果表明pH由1．0增大到6．0时捕集率依次增强，捕集动力学可用Lagergren拟二级速率方程来描述，线性相关系数达到0．99以上，捕集热力学等温线符合Freundlich方程；而活性炭捕集Pb（Ⅱ）离子满足Langmuir等温模型。静态模拟考察了Q6]捕集合铅废水的能力，结果表明在合Pb（Ⅱ）离子1．00×10^-2mol／l的模拟水样中，随着Q6]的加入量增加，水样中的Pb（Ⅱ）离子平衡浓度依次降低，当加入Q6]2．0g／mmol后，Q6]对Pb（Ⅱ）离子的捕集率达到98．4％．
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| 关 键 词： | 原子吸收光谱法 捕集动力学 捕集热力学 捕集率 |
Adsorption of Lead Ion on Cucurbit[6] uril |
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| LU Xiao-jun,XUE Sai-feng,TAO Zhu,ZHU Qian-jiang.Adsorption of Lead Ion on Cucurbit[6] uril[J].Journal of Guizhou University(Natural Science),2009,26(2):1-4,9. |
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| Authors: | LU Xiao-jun XUE Sai-feng TAO Zhu ZHU Qian-jiang |
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| Institution: | 1.Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province;Guizhou University;Guiyang 550025;China;2.Institute of Applied Chemistry;China |
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| Abstract: | The kinetic, thermodynamic of the Lead Ion adsorpt on Cucurbit 6 ] uril was studied by using the AAS , the kinetics could described by the Pseudo -second order model effectively, the correlation coefficient （r） more than 0. 99. The adsorption isotherms for lead ion follow the Freundlich isotherm model, the correlation coefficient （r） more than 0. 97 in the rome Temperature. Studing the adsorption under the condition of pH = 1 6, we find the adsorption rate is best in pH = 6.0. get a excellent condition for simulation waste water containing Lead 1.00 × 10 ^- 2mol/l is treated by Static method at last. The results show that the absorption rate reach in 98.4% after the addition of the Cucurbit 6 ] uril 2.0 g/mmol. |
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| Keywords: | AAS adsorption kinetic adsorption thermodynamic adsorption rate |
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