[资源分享] 吖啶红-共振荧光光谱法测定水溶液中的苯酚

吖啶红-共振荧光光谱法测定水溶液中的苯酚
  谭广辉;李贵荣;王永生;刘云富
  　　在硫酸介质中吖啶红的分子共振荧光信号强,发射峰尖而对称,受干扰因素少。基于苯酚能抑制KBrO3氧化吖啶红的反应,建立了阻抑动力学共振荧光分析法测定痕量苯酚。方法的线性范围为8.5×10-4~1.00 mg/L苯酚,检出限0.26μg/L。本方法用于环境水样中苯酚的测定,RSD小于2.94%,样品加标回收率为97.5%~102.5%。
【作者单位】：南华大学公共卫生学院 衡阳421001
【关键词】：共振荧光;吖啶红;苯酚
【基金】：湖南省自然科学基金(No.03JJY03030)资助项目
【分类号】：O657.3;O661.1
【DOI】：CNKI:SUN:FXHX.0.2008-05-027
【正文快照】：
　　1引言溶液中的分子共振荧光研究不多[1,2],本实验发现,在H2SO4介质中吖啶红(acrid ine red,AR)能产生很强的分子共振荧光。研究表明,吖啶红的分子共振荧光光谱具有信号强,共振荧光峰尖而对称及受干扰因素少等特点,具有分析应用价值。苯酚是一种重要的水体污染物,对人体健康危害
Resonance Fluorescence Spectra of Acridine Red and Its Analytical Application
  TAN Guang-Hui;LI Gui-Rong;WANG Yong-Sheng;LIU Yun-Fu(School of Public Health;University of South China;Hengyang 421001)
  　The properties of resonance fluorescence of Acridine Red(AR) were studied.AR itself has a strong resonance fluorescence signal that the resonance fluorescence peak is tine and symmetry in sulphuric acid medium,with foreign substances don′t interfere with it.Based on the inhibitory effect of phenol on the oxidation of AR by potassium bromate,a inhibitory resonance fluorescence method was proposed for the determination of trace phenol.The linear range was 8.50×10-4-1.00 mg/L with the detection limit of 0.26 μg/L.This method is simple,sensitive,rapid and can be applied to the determination of trace phenol in water samples of environment satisfactorily.The RSD was less than 2.947% and the recoveries range were 97.5%-102.5%.


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