| 激励光波长对乙醇溶液荧光光谱特性的影响 |
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| 引用本文： | 刘莹,兰秀风,沈中华,陆建,倪晓武.激励光波长对乙醇溶液荧光光谱特性的影响[J].光谱学与光谱分析,2005,25(2):242-245. |
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| 作者姓名： | 刘莹 兰秀风 沈中华 陆建 倪晓武 |
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| 作者单位： | 1. 南京理工大学理学院,江苏,南京,210094;徐州师范大学物理系,江苏,徐州,221009
2. 南京理工大学理学院,江苏,南京,210094 |
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| 基金项目： | 教育部科研重点项目(02116)，江苏省研究生创新计划资助 |
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| 摘 要： | 乙醇溶液在紫外光照射下可以发射荧光。当激励的紫外光波长在200～250nm变化时，乙醇溶液产生的荧光光谱基本相同，但峰值位置出现了明显的红移；当激励的紫外光波长相同时，随着溶液浓度的改变也将产生峰值位置的红移现象。文章从实验上对乙醇荧光峰值位置的红移规律进行了研究，并从理论上对红移现象进行了解释。研究结果有助于解释乙醇作为有机溶剂、荧光猝灭剂、食品添加剂等时对其他大分子的荧光光谱特性的影响，也将可能提供一种灵敏、快捷的乙醇含量测试方法。
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| 关 键 词： | 乙醇溶液 改变 荧光光谱特性 影响 研究结果 位置 灵敏 红移 荧光猝灭 溶液浓度 |
| 文章编号： | 1000-0593(2005)02-0242-04 |
| 修稿时间： | 2003年8月11日 |
Influence of Excitation Light Wavelength on the Fluorescence Spectra of Ethanol Solutions |
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| LIU Ying,LAN Xiu-feng,SHEN Zhong-hua,LU Jian,NI Xiao-wu.Influence of Excitation Light Wavelength on the Fluorescence Spectra of Ethanol Solutions[J].Spectroscopy and Spectral Analysis,2005,25(2):242-245. |
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| Authors: | LIU Ying LAN Xiu-feng SHEN Zhong-hua LU Jian NI Xiao-wu |
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| Institution: | School of Science, Nanjing University of Science & Technology, Nanjing 210094, China. |
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| Abstract: | Ethanol solution can emit visible fluorescence when induced by UV light. With emission spectral profiles similar on the whole, the peaks are red-shifted distinctly when the excitation light alters from 200 to 250 nm. And the spectral profiles of ethanol ~solutions with different concentrations are also red-shifted when induced by the same wavelength of excotation light. A thorough analysis of the rule of spectrum peaks that are red-shifted is carried out and discussed in theory and in experiment. Investigation on the intrinsic fluorescence spectrum of ethanol solution and its characteristics will contribute to the study of the fluorescence spectra when ethanol serves as a solute and hydrolysis catalyst. Especially, this study will also help to offer a sensitive method of the determination of ethanol. |
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| Keywords: | Ethanol solution Fluorescence spectra Red-shift UV light induction |
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