Method for the substantial reduction of quenching effects in luminescence spectrometry

Title: Method for the substantial reduction of quenching effects in luminescence spectrometry

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Abstract

Method for reducing quenching effects in analytical luminescence measurements. Two embodiments of the present invention are described which relate to a form of time resolution based on the amplitudes and phase shifts of modulated emission signals. In the first embodiment, the measured modulated emission signal is substantially independent of sample quenching at sufficiently high frequencies. In the second embodiment, the modulated amplitude and the phase shift between the emission signal and the excitation source are simultaneously measured. Using either method, the observed modulated amplitude may be reduced to its unquenched value. 3 figs.

Inventors:: Demas, J.N.; Jones, W.M.; Keller, R.A.

Issue Date:: 1987-06-26

Research Org.:: Los Alamos National Lab., NM (USA)

OSTI Identifier:: 7013923

Patent Number(s):: -US-A6068005

Assignee:: TIC; ERA-14-001182; EDB-88-185197

DOE Contract Number:: W-7405-ENG-36

Resource Type:: Patent

Resource Relation:: Other Information: Portions of this document are illegible in microfiche products

Country of Publication:: United States

Language:: English

Subject:: 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; QUENCHING; REDUCTION; SPECTROMETERS; DESIGN; INVENTIONS; LUMINESCENCE; SPECTROSCOPY; CHEMICAL REACTIONS; MEASURING INSTRUMENTS; 400102* - Chemical & Spectral Procedures

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                    Demas, J.N., Jones, W.M., and Keller, R.A. Method for the substantial reduction of quenching effects in luminescence spectrometry.  United States: N. p., 1987. 
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                    Demas, J.N., Jones, W.M., & Keller, R.A. Method for the substantial reduction of quenching effects in luminescence spectrometry.  United States.

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                    Demas, J.N., Jones, W.M., and Keller, R.A. Fri .  
        "Method for the substantial reduction of quenching effects in luminescence spectrometry".  United States.

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@article{osti_7013923,

  title        = {Method for the substantial reduction of quenching effects in luminescence spectrometry},

  author       = {Demas, J.N. and Jones, W.M. and Keller, R.A.},

  abstractNote = {Method for reducing quenching effects in analytical luminescence measurements. Two embodiments of the present invention are described which relate to a form of time resolution based on the amplitudes and phase shifts of modulated emission signals. In the first embodiment, the measured modulated emission signal is substantially independent of sample quenching at sufficiently high frequencies. In the second embodiment, the modulated amplitude and the phase shift between the emission signal and the excitation source are simultaneously measured. Using either method, the observed modulated amplitude may be reduced to its unquenched value. 3 figs.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1987},

  month        = {6}

}

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