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碘荧光
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    An Iodine Sensing Membrane Based on Fluorescence Quenching of Pyrene
    基于芘的荧光熄灭的单质碘荧光敏感膜的研究
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  iodine fluorescence
The frequency accuracy was assured by monitoring the frequency of both of the lasers with an iodine fluorescence cell or a Fabry-Perot etalon dynamically calibrated by a stabilized HeNe laser.
      
An efficient optical pressure measurement in compressible flows: Laser-induced iodine fluorescence
      
  iodine fluorescence
The frequency accuracy was assured by monitoring the frequency of both of the lasers with an iodine fluorescence cell or a Fabry-Perot etalon dynamically calibrated by a stabilized HeNe laser.
      
An efficient optical pressure measurement in compressible flows: Laser-induced iodine fluorescence
      


The analysis of rose bengal-131I preparation, by PC has been investigated. Analytic conditions were determined. Chromatographic separation was carried out by the ascending technique with solvent system: n-amyl alcohol-cone, ammonium hydroxide-water (0.5:2:100) on'domestic "Xin Hua" medium speed chromatographic paper, Whatman (?) 1 or (?) 2 paper. The front was 25cm. The time was 2 to 4 hours. The method is suitable for routine quality control of the preparation. After one-dimensional chroma-tography, content...

The analysis of rose bengal-131I preparation, by PC has been investigated. Analytic conditions were determined. Chromatographic separation was carried out by the ascending technique with solvent system: n-amyl alcohol-cone, ammonium hydroxide-water (0.5:2:100) on'domestic "Xin Hua" medium speed chromatographic paper, Whatman (?) 1 or (?) 2 paper. The front was 25cm. The time was 2 to 4 hours. The method is suitable for routine quality control of the preparation. After one-dimensional chroma-tography, content of 131I- and tetraiodotetrachloro-fluorescein in the preparation can be determined at the same time.Deiodination of sample on paper has also been studied. Before chromatographic separation, the sample point should not be dried by infrared lamp, otherwise deiodi-nation will occur, and the content of iodide ion will be increased.

本文研究了玫瑰红-~(131)Ⅰ制剂的纸上色层分析,确定了适宜的分析条件。 采用“新华”中速色层纸,或Whatman № 1、№ 2色层纸,以戊醇-浓氨水-水(0.5:2:100)作为溶剂,用上行色层法展开到前沿25厘米,时间约为2—4小时。方法可用于玫瑰红-~(131)I制剂的常规质量控制分析,能同时测定制剂中的游离~(131)I~-和四氯四碘荧光素的含量。 同时观察了样品在色层纸上的脱碘现象,确定样点在色层分离前不能用红外灯烤干,否则会发生脱碘作用,使~(131)I~-含量增加。

The fluorescence lifetimes τ_((?)M) of two oarbocyanine dyes and the fluorescein dye, Erythrosine B as a function of viscosity, η, have been measured in a series of aliphatic alcohols and diols by picosecond time-resolved fluorescence spectroscopy. It was found that τ_((?)M) for the carbocyanines in the diols and glycerol was anomalously low. τ_(FM) varied linearly with η~(2/3) in the diols but not in monohydric alcohols. This indicates the need to treat with caution any study of viscosity dependence, where...

The fluorescence lifetimes τ_((?)M) of two oarbocyanine dyes and the fluorescein dye, Erythrosine B as a function of viscosity, η, have been measured in a series of aliphatic alcohols and diols by picosecond time-resolved fluorescence spectroscopy. It was found that τ_((?)M) for the carbocyanines in the diols and glycerol was anomalously low. τ_(FM) varied linearly with η~(2/3) in the diols but not in monohydric alcohols. This indicates the need to treat with caution any study of viscosity dependence, where the viscosity range is produced by mixing alcohols of different classes such as ethanol and glycerol. The 2/3-power law was found to hold for Erythrosine B in monohydric alcohols.

应用10~(-12)s级时间分辨率的荧光光谱,测定了两种碳菁染料和一种荧光素染料(四碘荧光素B)的荧光寿命τ与溶剂粘度η之间的函数关系,发现碳菁染料在二元醇和丙三醇中的τ_(FM)低得反常.在二元醇溶剂中,它们的τ_(FM)与溶剂粘度η~(2/3)呈线性函数关系,但在一元醇溶剂中则并无此线性关系.由此可见,在研究染料分子的寿命与由不同系列醇(例如乙醇和丙三醇)组成的混合溶剂的粘度之间的依赖关系时,必须十分谨慎.对于四碘荧光素B,它在一元醇中的荧光寿命与溶剂粘度的关系符合2/3指数规律.

The solid complexes of diiodofluorcsccin and fluorescein with rare earth elements were prepared by a new method.Some physical and chemical properties of these compounds were investigated,such as IR spectra,TG curves and X-ray powder diffraction diagram,electric conductance and solubility in different solvents.The composition of these compounds have been ascertained by chemical and elemental analyses.The solid complexes of diiodofluorcsccin and fluorescein with rare earth elements were prepared by a new method.Some...

The solid complexes of diiodofluorcsccin and fluorescein with rare earth elements were prepared by a new method.Some physical and chemical properties of these compounds were investigated,such as IR spectra,TG curves and X-ray powder diffraction diagram,electric conductance and solubility in different solvents.The composition of these compounds have been ascertained by chemical and elemental analyses.The solid complexes of diiodofluorcsccin and fluorescein with rare earth elements were prepared by a new method.Some physical and chemical properties of these compounds were investigated,such as IR spectra,TG curves and X-ray powder diffraction diagram,electric conductance and solubility in different solvents.The composition of these compounds have been ascertained by chemical and elemental analyses.

本文报导了一种合成二碘荧光素、荧光素稀土配合物的新方法,得到了定组成的固体配合物,并对它们的一系列性质进行了研究。通过化学分析、元素分析确定了它们的组成。

 
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