| 量子点传感器测定水中微量银离子 |
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| 引用本文： | 来守军.量子点传感器测定水中微量银离子[J].广东微量元素科学,2008,15(6). |
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| 作者姓名： | 来守军 |
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| 作者单位： | 重庆三峡学院化学与环境工程系,重庆,404000 |
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| 摘 要： | 选择铋试剂Ⅱ作为硫化镉(cds)量子点的修饰剂,合成了表面修饰的量子点,利用其有效官能团与银离子作用,导致修饰的量子点的荧光增强作用,建立了测定银离子的方法,开发了新型的银离子的传感器。结果表明,对水中银离子测定的线性范围为0.01~5.0μmol.L-1,相关系数为0.999 3,检测限达到1.6 nmol.L-1,对实际水样的分析获得了较满意的结果。
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| 关 键 词： | 量子点 传感器 水 银离子 |
Determination of Silver Ion in Water by Quantum Dots Sensor |
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| LAI Shoujun.Determination of Silver Ion in Water by Quantum Dots Sensor[J].Trace Elements Science,2008,15(6). |
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| Authors: | LAI Shoujun |
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| Institution: | LAI Shoujun(Department of Chemistry and Environmental Engineering; Chongqing Three Gorge University; Chongqing 404000; China); |
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| Abstract: | CdS quantum dots(QDs) modified with bismuthiol Ⅱ potassium salt is prepared by one step.Based on the characteristic fluorescence enhancement of CdS QDs,a simple,rapid,sensitive and specific detection method for silver ion is proposed.Under optimum conditions,the fluorescence intensity of CdS QDs was linearly proportional to silver ion concentration from 0.01 to 5.0 μmol·L-1with a detection limit of 1.6 nmol·L-1.Moreover,the analytical results in water sample are satifisfactory. |
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| Keywords: | quantum dots sensor water silver ion |
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