三种酚类化合物的三维荧光光谱特性研究

时间:2021-07-29 18:44:22 环境保护论文 我要投稿
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三种酚类化合物的三维荧光光谱特性研究

摘要:三维荧光光谱技术通过在不同激发波长下扫描发射光谱获得荧光强度变化信息,由于其灵敏度高,选择性好,被广泛用于环境中污染物的监测.利用该方法研究3种酚类化合物的荧光光谱特性,在激发波长为240~360 nm,发射波长为260~500 nm范围内,确定了苯酚、间甲酚和麝香草酚的`荧光峰位置分别为272/300,274/300和276/304 nm.由于3种酚类物质为同系物,结构相似,因此得到的激发光谱和发射光谱在形状上极为相似.工作液浓度在0.02~1.0 mg·L-1范围内,3种酚类物质的浓度与荧光强度之间均呈现较好的线性关系,且检出限达到1 μg·L-1.实验结果表明,用三维荧光光谱法町对3种酚类化合物进行定性和定量分析.Abstract:The fluorescence intensity information was collected by scanning its fluorescence spectra at different excitation wavelengths.Based on its high sensitivity and selectivity,excitation-emission fluorescence can be widely used for detection of pollutants in the environment.The characterizations of the three phenolic compounds were investigated by this method,and the fluorescence peaks of phenol,m-cresol and thymol were confirmed at 272/300 nm,274/300 nm and 276/304 nm when the excitation and emission wavelength were set in the range of 240-360 nm and 260-500 nm respectively.The excitation and emission spectra of the three phenolic compounds are very similar because of their analogical structure.The intensity of the spectrum has a good linear relationship with the concentration when the solution concentration is between 0.02 and 1.0 mg·L-1,and the limits of detection can reach at 1 μg·L-1.Results show that the three compounds can be analyzed qualitatively and quantitatively by excitation-emission fluorescence. 作者: 王欢博张玉钧肖雪金丹赵南京殷高方郭立泉刘文清 Author: WANG Huan-bo  ZHANG Yu-jun  XIAO Xue  JIN Dan  ZHAO Nan-jing  YIN Gao-fang  GUO Li-quan  LIU Wen-qing 作者单位: 中国科学院安徽光学精密机械研究所,中国科学院环境光学与技术重点实验室,安徽,合肥,230031 期 刊: 光谱学与光谱分析   ISTICEISCIPKU Journal: SPECTROSCOPY AND SPECTRAL ANALYSIS 年,卷(期): 2010, 30(5) 分类号: X830.2 关键词: 苯酚    间甲酚    麝香草酚    三维荧光光谱    荧光特性    Keywords: Phenol    m-cresol    Thymol    Excitation-emission fluorescence    Fluorescence characterization    机标分类号: O65 X83 机标关键词: 酚类化合物    三维荧光光谱法    特性研究    Phenolic Compounds    Three    Study    Characterization    fluorescence intensity    phenolic compounds    fluorescence spectra    linear relationship    detection    荧光强度    激发波长    酚类物质    发射光谱    high sensitivity    emission spectra    three    定性和定量分析 基金项目: 国家(863计划)项目

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