| Pb2＋在液/液界面迁移的电化学研究及其应用 |
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| 引用本文： | 陈恺,谢少艾,贾金平. Pb2＋在液/液界面迁移的电化学研究及其应用[J]. 化学学报, 2006, 64(6): 532-536 |
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| 作者姓名： | 陈恺 谢少艾 贾金平 |
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| 作者单位： | 上海交通大学环境科学与工程学院,上海,200240 |
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| 摘 要： | 用循环伏安法研究了双硫腙络合推动Pb2＋在水/乙酰丙酮界面迁移的伏安过程. 实验证明, 该过程是受扩散控制的不可逆过程, Pb2＋由水相转移到有机相中, 与双硫腙形成络合物Pb(DzH)2. Pb2＋的峰电位在－0.3 V处, 并且在5× 10－6～0.1 mol•L－1范围内与峰电流成正比. 这一方法为工业废水中铅的在线、现场测定提供了可靠、灵敏的检测方法.
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| 关 键 词： | 液/液界面 循环伏安法 铅 双硫腙 |
| 收稿时间： | 2005-06-13 |
| 修稿时间： | 2005-06-132005-11-26 |
Electrochemical Study and Application of Pb2+ Transfer Across the Liquid/Liquid Interface |
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| CHEN Kai,XIE Shao-Ai,JIA Jin-Ping. Electrochemical Study and Application of Pb2+ Transfer Across the Liquid/Liquid Interface[J]. Acta Chimica Sinica, 2006, 64(6): 532-536 |
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| Authors: | CHEN Kai XIE Shao-Ai JIA Jin-Ping |
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| Affiliation: | (School of Environmental Science and Engineering, Shanghai Jiaotong University, Shanghai 200240) |
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| Abstract: | Pb2＋ has a sensitive complex peak in the water/acetylacetone-dithizone system. The voltammetric behavior of Pb(II) facilitated by dithizone (DzH2) across the water/acetylacetone interface was investigated by cyclic voltammetry. The process was controlled by diffusion and irreversible. Pb2＋ transferred from water to acetylacetone to form Pb(DzH)2 with dithizone. Pb2＋spike potential appeared at －0.3 V and the linear scope was 5×10－6～0.1 mol•L－1. The reliable and sensitive method can be developed for the on-line and in situ determination of Pb2＋ in industrial waste water. |
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| Keywords: | liquid/liquid interface cyclic voltammetry Pb2 dithizone |
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