Method and apparatus for assaying wood pulp fibers

Title: Method and apparatus for assaying wood pulp fibers

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Abstract

Paper pulp is added to a stain solution. The stain solution and pulp fibers are mixed to form a slurry. Samples are removed from the slurry and are admixed with dilution water and a bleach. Then, the fibers are moved into a flow cell where they are subjected to a light source adapted to stimulate fluorescence from the stained pulp fiber. Before the fiber slurry enters the flow cell it is mixed with a dilution water of bleach to reduce background fluorescence. The fluorescent light is collimated and directed through a dichroic filter onto a fluorescence splitting dichroic filter.

Inventors:

Gustafson, Richard ^[1]; Callis, James B ^[2]; Mathews, Jeffrey D ^[3]; Robinson, John ^[4]; Bruckner, Carsten A ^[5]; Suvamakich, Kuntinee ^[2]

Bellevue, WA
Seattle, WA
Neenah, WI
Issaquah, WA
San Mateo, CA

Issue Date:: 2009-05-26

Research Org.:: University of Washington (Seattle, WA)

Sponsoring Org.:: USDOE

OSTI Identifier:: 988042

Patent Number(s):: 7537732

Application Number:: 10/788,548

Assignee:: University of Washington (Seattle, WA)

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

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

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G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
G01N15/1459 - {the analysis being performed on a sample stream}
G01N21/6458 - {Fluorescence microscopy
G01N2021/6439 - {with indicators, stains, dyes, tags, labels, marks}
G01N2021/6421 - {Measuring at two or more wavelengths}

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
Y10T436/25 - including sample preparation

G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
G01N2015/1497 - {Particle shape}
G01N1/38 - Diluting, dispersing or mixing samples
G01N33/343 - {paper pulp}
G01N15/1463 - {using image analysis for extracting features of the particle}

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DOE Contract Number:: FC07-97ID13539

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE

Citation Formats


                    Gustafson, Richard, Callis, James B, Mathews, Jeffrey D, Robinson, John, Bruckner, Carsten A, and Suvamakich, Kuntinee. Method and apparatus for assaying wood pulp fibers.  United States: N. p., 2009. 
        Web.

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                    Gustafson, Richard, Callis, James B, Mathews, Jeffrey D, Robinson, John, Bruckner, Carsten A, & Suvamakich, Kuntinee. Method and apparatus for assaying wood pulp fibers.  United States.

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                    Gustafson, Richard, Callis, James B, Mathews, Jeffrey D, Robinson, John, Bruckner, Carsten A, and Suvamakich, Kuntinee. Tue .  
        "Method and apparatus for assaying wood pulp fibers".  United States.  https://www.osti.gov/servlets/purl/988042.

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@article{osti_988042,

  title        = {Method and apparatus for assaying wood pulp fibers},

  author       = {Gustafson, Richard and Callis, James B and Mathews, Jeffrey D and Robinson, John and Bruckner, Carsten A and Suvamakich, Kuntinee},

  abstractNote = {Paper pulp is added to a stain solution. The stain solution and pulp fibers are mixed to form a slurry. Samples are removed from the slurry and are admixed with dilution water and a bleach. Then, the fibers are moved into a flow cell where they are subjected to a light source adapted to stimulate fluorescence from the stained pulp fiber. Before the fiber slurry enters the flow cell it is mixed with a dilution water of bleach to reduce background fluorescence. The fluorescent light is collimated and directed through a dichroic filter onto a fluorescence splitting dichroic filter.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2009},

  month        = {5}

}

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