引用本文:
叶敏, 张友玉, 杨琴, 张雨琴, 谭平, 姚守拙. 半胱胺修饰的CdS纳米粒子荧光猝灭法测定锰离子[J]. 应用化学,
2008, 25(5): 534-538.
Citation: YE Min, ZHANG You-Yu, YANG Qin, ZHANG Yu-Qin, TAN Ping, YAO Shou-Zhuo. Fluorescence Quenching Method for the Determination of Manganese Ion with Cysteamine-capped-CdS Nanoparticles[J]. Chinese Journal of Applied Chemistry, 2008, 25(5): 534-538.
Citation: YE Min, ZHANG You-Yu, YANG Qin, ZHANG Yu-Qin, TAN Ping, YAO Shou-Zhuo. Fluorescence Quenching Method for the Determination of Manganese Ion with Cysteamine-capped-CdS Nanoparticles[J]. Chinese Journal of Applied Chemistry, 2008, 25(5): 534-538.
半胱胺修饰的CdS纳米粒子荧光猝灭法测定锰离子
English
Fluorescence Quenching Method for the Determination of Manganese Ion with Cysteamine-capped-CdS Nanoparticles
Abstract:
Water-soluble Cysteamine-capped-CdS nanoparticles were prepared in aqueous solution at room temperature,and characterized by atomic force microscopy,scanning electron microscopy,Fourier transform infrared spectrometry,Ultraviolet-visible spectrometry,and spectrofluorimetry,respectively.A new approach was proposed for the sensitive determination of manganese ion with nanoparticles as the fluorescence probe.Different influencing factors were studied,including the concentration and pH of buffer,reaction time,and concentration of the nanoparticles.Under the optimum conditions,the response was linearly proportional to the concentration of manganese (Ⅱ) ion in a range of 0.053 40 mg/L to 77.62 mg/L.The detection limit was 0.016 78 mg/L for manganese (Ⅱ) ion.And it was proved to be a low-cost,simple,rapid,sensitive,low-limit method.Functionalized nanoparticles are hopeful to use as fluorescence probe in detecting trace elements in biological samples.
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Key words:
- CdS
- / nanoparticle
- / manganese ion
- / fluorescence quenching
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