GB2333835B - Improved method and apparatus for detection of asbestos fibres - Google Patents

Improved method and apparatus for detection of asbestos fibres

Info

Publication number
GB2333835B
GB2333835B GB9902017A GB9902017A GB2333835B GB 2333835 B GB2333835 B GB 2333835B GB 9902017 A GB9902017 A GB 9902017A GB 9902017 A GB9902017 A GB 9902017A GB 2333835 B GB2333835 B GB 2333835B
Authority
GB
United Kingdom
Prior art keywords
detection
improved method
asbestos fibres
asbestos
fibres
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
GB9902017A
Other versions
GB9902017D0 (en
GB2333835A8 (en
GB2333835A (en
GB2333835B8 (en
Inventor
Zbigniew Josef Ulanowski
Paul Henry Kaye
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
University of Hertfordshire
Original Assignee
University of Hertfordshire
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from GBGB9802131.4A external-priority patent/GB9802131D0/en
Application filed by University of Hertfordshire filed Critical University of Hertfordshire
Priority to GB9902017A priority Critical patent/GB2333835B8/en
Publication of GB9902017D0 publication Critical patent/GB9902017D0/en
Publication of GB2333835A publication Critical patent/GB2333835A/en
Publication of GB2333835B publication Critical patent/GB2333835B/en
Application granted granted Critical
Publication of GB2333835A8 publication Critical patent/GB2333835A8/en
Publication of GB2333835B8 publication Critical patent/GB2333835B8/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/10—Investigating individual particles
    • G01N15/14—Optical investigation techniques, e.g. flow cytometry
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/02—Investigating particle size or size distribution
    • G01N15/0205—Investigating particle size or size distribution by optical means
    • G01N15/0211—Investigating a scatter or diffraction pattern
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N2015/0042—Investigating dispersion of solids
    • G01N2015/0046—Investigating dispersion of solids in gas, e.g. smoke
    • G01N2015/0049—Investigating dispersion of solids in gas, e.g. smoke of filaments in gas
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/10—Investigating individual particles
    • G01N15/14—Optical investigation techniques, e.g. flow cytometry
    • G01N15/1404—Handling flow, e.g. hydrodynamic focusing
    • G01N2015/1415—Control of particle position
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/10—Investigating individual particles
    • G01N15/14—Optical investigation techniques, e.g. flow cytometry
    • G01N2015/1497—Particle shape
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N2021/4704—Angular selective
    • G01N2021/4711—Multiangle measurement
    • G01N2021/4716—Using a ring of sensors, or a combination of diaphragm and sensors; Annular sensor

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
GB9902017A 1998-01-30 1999-02-01 Improved method and apparatus for detection of asbestos fibres Expired - Lifetime GB2333835B8 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9902017A GB2333835B8 (en) 1998-01-30 1999-02-01 Improved method and apparatus for detection of asbestos fibres

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9802131.4A GB9802131D0 (en) 1998-01-30 1998-01-30 Improved method and apparatus for detection of asbestos
GB9902017A GB2333835B8 (en) 1998-01-30 1999-02-01 Improved method and apparatus for detection of asbestos fibres

Publications (5)

Publication Number Publication Date
GB9902017D0 GB9902017D0 (en) 1999-03-17
GB2333835A GB2333835A (en) 1999-08-04
GB2333835B true GB2333835B (en) 2002-05-01
GB2333835A8 GB2333835A8 (en) 2013-04-10
GB2333835B8 GB2333835B8 (en) 2013-04-10

Family

ID=26313047

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9902017A Expired - Lifetime GB2333835B8 (en) 1998-01-30 1999-02-01 Improved method and apparatus for detection of asbestos fibres

Country Status (1)

Country Link
GB (1) GB2333835B8 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6549275B1 (en) * 2000-08-02 2003-04-15 Honeywell International Inc. Optical detection system for flow cytometry
GB2510854B (en) * 2013-02-15 2015-08-05 Univ Hertfordshire Higher Education Corp Improved apparatus and method for detection of asbestos fibres
GB201509926D0 (en) * 2015-06-08 2015-07-22 Univ Hertfordshire Higher Education Corp Crystalline particle detection
CN113465664A (en) * 2021-06-17 2021-10-01 国网宁夏电力有限公司电力科学研究院 Method for detecting and identifying foreign matters in tank type power equipment

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4940327A (en) * 1988-10-25 1990-07-10 Trc Companies Inc. Method and apparatus for real time asbestos aerosol monitoring

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4940327A (en) * 1988-10-25 1990-07-10 Trc Companies Inc. Method and apparatus for real time asbestos aerosol monitoring

Also Published As

Publication number Publication date
GB9902017D0 (en) 1999-03-17
GB2333835A8 (en) 2013-04-10
GB2333835A (en) 1999-08-04
GB2333835B8 (en) 2013-04-10

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Legal Events

Date Code Title Description
S117 Correction of errors in patents and applications (sect. 117/patents act 1977)

Free format text: REQUEST FILED; REQUEST FOR CORRECTION UNDER SECTION 117 FILED ON 6 MARCH 2012

S117 Correction of errors in patents and applications (sect. 117/patents act 1977)

Free format text: REQUEST FILED; REQUEST FOR CORRECTION UNDER SECTION 117 FILED ON 6 MARCH 2012

S117 Correction of errors in patents and applications (sect. 117/patents act 1977)

Free format text: CORRECTIONS ALLOWED; REQUEST FOR CORRECTION UNDER SECTION 117 FILED ON 6 MARCH 2012 ALLOWED ON 3 APRIL 2013

PE20 Patent expired after termination of 20 years

Expiry date: 20190131