Fluorescence analyzer for lignin

Title: Fluorescence analyzer for lignin

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Abstract

A method and apparatus for measuring lignin concentration in a sample of wood pulp or black liquor comprises a light emitting arrangement for emitting an excitation light through optical fiber bundles into a probe which has an undiluted sensing end facing the sample. The excitation light causes the lignin concentration to produce fluorescent emission light which is then conveyed through the probe to analyzing equipment which measures the intensity of the emission light. Measures a This invention was made with Government support under Contract Number DOE: DE-FC05-90CE40905 awarded by the Department of Energy (DOE). The Government has certain rights in this invention.

Inventors:

Berthold, John W ^[1]; Malito, Michael L ^[2]; Jeffers, Larry ^[3]

Salem, OH
Hubbard, OH
Alliance, OH

Issue Date:: 1993-01-01

Research Org.:: BABCOCK & WILCOX CO

OSTI Identifier:: 868802

Patent Number(s):: 5216483

Assignee:: Babcock & Wilcox Company (New Orleans, LA)

Patent Classifications (CPCs):: G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES

D - TEXTILES D21 - PAPER-MAKING D21C - PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS

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G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
G01N21/6408 - {with measurement of decay time, time resolved fluorescence}

D - TEXTILES D21 - PAPER-MAKING D21C - PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS
D21C7/12 - Devices for regulating or controlling

G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
G01N33/343 - {paper pulp}

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DOE Contract Number:: FC05-90CE40905

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: fluorescence; analyzer; lignin; method; apparatus; measuring; concentration; sample; wood; pulp; black; liquor; comprises; light; emitting; arrangement; excitation; optical; fiber; bundles; probe; undiluted; sensing; facing; causes; produce; fluorescent; emission; conveyed; analyzing; equipment; measures; intensity; government; support; contract; de-fc05-90ce40905; awarded; department; energy; rights; optical fiber; excitation light; light emitting; black liquor; government support; lignin concentration; wood pulp; fiber bundle; fiber bundles; emission light; fluorescent emission; /356/162/250/

Citation Formats


                    Berthold, John W, Malito, Michael L, and Jeffers, Larry. Fluorescence analyzer for lignin.  United States: N. p., 1993. 
        Web.

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                    Berthold, John W, Malito, Michael L, & Jeffers, Larry. Fluorescence analyzer for lignin.  United States.

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                    Berthold, John W, Malito, Michael L, and Jeffers, Larry. Fri .  
        "Fluorescence analyzer for lignin".  United States.  https://www.osti.gov/servlets/purl/868802.

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@article{osti_868802,

  title        = {Fluorescence analyzer for lignin},

  author       = {Berthold, John W and Malito, Michael L and Jeffers, Larry},

  abstractNote = {A method and apparatus for measuring lignin concentration in a sample of wood pulp or black liquor comprises a light emitting arrangement for emitting an excitation light through optical fiber bundles into a probe which has an undiluted sensing end facing the sample. The excitation light causes the lignin concentration to produce fluorescent emission light which is then conveyed through the probe to analyzing equipment which measures the intensity of the emission light. Measures a This invention was made with Government support under Contract Number DOE: DE-FC05-90CE40905 awarded by the Department of Energy (DOE). The Government has certain rights in this invention.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1993},

  month        = {1}

}

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