| 羟基磷灰石/离子液体混合膜修饰电极的制备及其应用于水中痕量镉离子的高选择性测定 |
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| 引用本文： | 潘壮英,马荣娜,李静,刘燕,赵倩,王国涛,王怀生.羟基磷灰石/离子液体混合膜修饰电极的制备及其应用于水中痕量镉离子的高选择性测定[J].化学学报,2009,67(23):2721-2726. |
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| 作者姓名： | 潘壮英 马荣娜 李静 刘燕 赵倩 王国涛 王怀生 |
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| 作者单位： | 聊城大学化学化工学院,聊城,252059 |
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| 基金项目： | 国家自然科学基金(Nos.20575024,20775031);;山东省“泰山学者”建设工程专项经费资助项目 |
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| 摘 要： | 利用溴代十六烷基三甲基铵(CTAB)为模板, 合成制备了棒状羟基磷灰石颗粒, 并以SEM, XRD, IR等手段进行了表征. 用制备的羟基磷灰石与自制的离子液体(BMIM]PF6)充分混合涂覆在玻碳电极表面制备了羟基磷灰石/离子液体修饰电极, 研究了镉离子在该修饰电极上的富集和电化学行为. 结果发现, 羟基磷灰石对镉离子有较好的富集作用, 而离子液体则可以在开路条件下使镉离子还原为金属镉, 氧化扫描时可以得到镉的灵敏氧化溶出峰, 以此为基础建立了一种高选择性地测定痕量镉离子的新方法, 该方法可以较好地避免铅、汞、银等重金属离子的干扰, 对镉离子检出限可达2.0×10－8 mol•L－1, 在4.0×10－8～2.2×10－7 mol•L－1的浓度范围内, 氧化溶出峰电流与Cd(II)的浓度呈良好的线性关系. 该研究有望在环境检测和环境治理方面发挥重要作用.
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| 关 键 词： | 羟基磷灰石 离子液体 镉离子 修饰电极 |
| 收稿时间： | 2009-04-16 |
| 修稿时间： | 2009-06-10 |
Preparation of Hydroxyapatite/Ionic Liquid Composite Film Modified Electrode and Its Application for the Highly Selective Determination of Trace Cadmium in Water |
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| Pan Zhuangying,Ma Rongna,Li Jing,Liu Yan,Zhao Qian,Wang Guotao,Wang Huaisheng.Preparation of Hydroxyapatite/Ionic Liquid Composite Film Modified Electrode and Its Application for the Highly Selective Determination of Trace Cadmium in Water[J].Acta Chimica Sinica,2009,67(23):2721-2726. |
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| Authors: | Pan Zhuangying Ma Rongna Li Jing Liu Yan Zhao Qian Wang Guotao Wang Huaisheng |
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| Institution: | College of Chemistry and Chemical Engineering;Liaocheng University;Liaocheng 252059 |
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| Abstract: | Stick-like hydroxyapatite particles were synthesized using cetyltrimethylammonium bromide as template and characterized with SEM, XRD and IR. The hydroxyapatite/ionic liquid modified electrode was prepared by coating the mixture of hydroxyapatite particles and the ionic liquids (BMIM]PF6) on the glassy carbon electrode surface. The accumulative and electrochemical behavior of Cd(II) on the modified electrode was investigated and the results showed that Cd(II) could be accumulated on the hydroxyapatite surf... |
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| Keywords: | hydroxyapatite ionic liquid modified electrode |
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