| 基于纳米探针的压电重金属离子检测 |
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| 引用本文： | 陈自锋,仇伟,杨琳玲. 基于纳米探针的压电重金属离子检测[J]. 化工文摘, 2008, 0(3): 37-39 |
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| 作者姓名： | 陈自锋 仇伟 杨琳玲 |
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| 作者单位： | 重庆大学化学化工学院微系统研究中心,重庆400044 |
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| 摘 要： | 文章通过在QCM（Quartz Crystal Microbalance，石英晶体微天平）表面形成纳米复合物引起质量变化来检测溶液中的痕量重金属离子。先让金属离子在羧基修饰的QCM表面进行络合吸附，然后加入羧基修饰的金纳米粒子，使之与QCM表面吸附的重金属离子结合，在QCM表面形成一层三明治结构的纳米复合物，引起QCM谐振频率明显下降。该方法大大提高了QCM检测重金属离子的灵敏度，且具有重现性好、传感器易再生等特点。
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| 关 键 词： | 重金属离子 压电石英微天平（QCM） 纳米探针 |
Piezoelectric Detection of Heavy Metal Ions Based on Nano-Probes |
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| Chen Zifeng,Qiu Wei,Yang Linling. Piezoelectric Detection of Heavy Metal Ions Based on Nano-Probes[J]. , 2008, 0(3): 37-39 |
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| Authors: | Chen Zifeng Qiu Wei Yang Linling |
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| Affiliation: | Chen Zifeng,Qiu Wei,Yang Linling(College of Chemistry & Chemical Engineering Microsystem Research Centre Chongqing University Chongqing 400044 China) |
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| Abstract: | A novel detection method for trance heavy metal ions has been developed by formation of nano-complexes on quartz crystal microbalance(QCM).By complexing with carboxyl groups,metal ions are first bound to the carboxyl-modified QCM surface,and carboxyl-modified gold nanoparticles,named nano-probes(NPs),are then introduced to bind the surface-captured metal ions to form sandwich nanostructures,and result in a significant QCM resonant frequency decrease.The signal was greatly amplified by nanoparticles with a p... |
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| Keywords: | heavy metal ion quartz crystal microbalance(QCM) Nano-Probes |
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