吲哚在无保护溶液体系中的室温燐光  

Room Temperature Phosphorescence of Indole in Non-protected Solution System

作　　者：龙文清[1] 

机构地区：[1]井冈山学院化学系,江西吉安343009

出　　处：《分析科学学报》2006年第2期187-189,共3页Journal of Analytical Science

基　　金：江西省教育要资助项目(赣教计字[2001]387号)

摘　　要：本文研究了吲哚的无保护流体室温燐光（NP-RTP）性质。基于NP-RTP建立起来的分析方法已直接用于鱼中吲哚的测定。方法的线性范围为1．0×10^-7～7．0×10^-8mol／L，相对标准偏差为2．1％～3．4％。本方法无须保护性介质而仅以KI为重原子微扰剂、Na2SO3为除氧剂即可。0．60mol／L KI、2．0×10^-3mol／L Na2SO3和pH8．6为方法的最佳测定条件。The non-protected fluid room temperature phosphorescence （NP-RTP） properties of indole have been studied. The method based on NP-RTP was applied directly to determination of indole in fish with satisfactory results. The relative errors were -1.5～4.2% as compared with speetrophotometry and the relative standard deviations were 2. 1～3.4% for indole in the above samples. The proposed method was based on obtaining a phosphorescence signal from indole using potassium iodide as a heavy atom perturber and sodium sulfite as a deoxygenating reagent without a protecting medium. Optimized conditions for the determination were 0.60 mol/L KI, 2.0×10^-3 mol/L sodium sulfite and pH 8.6. The phosphorescence peak wavelength was λex/λem= 277/437 nm. The response obtained was linearly dependent on concentration in the range 1.0× 10^-7 to 7.0 × 10^-6 mol/L.

关 键 词：吲哚 无保护流体室温燐光 碘化钾 

分 类 号：O657.39[理学—分析化学]