BR0211327A - Detecção de gás empregando espectroscopia de absorção de luz - Google Patents

Detecção de gás empregando espectroscopia de absorção de luz

Info

Publication number
BR0211327A
BR0211327A BR0211327-9A BR0211327A BR0211327A BR 0211327 A BR0211327 A BR 0211327A BR 0211327 A BR0211327 A BR 0211327A BR 0211327 A BR0211327 A BR 0211327A
Authority
BR
Brazil
Prior art keywords
mirror
axle
light source
detector
cell
Prior art date
Application number
BR0211327-9A
Other languages
English (en)
Inventor
Fabrice Marcel S Bounaix
Original Assignee
Tdw Delaware Inc
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
Application filed by Tdw Delaware Inc filed Critical Tdw Delaware Inc
Publication of BR0211327A publication Critical patent/BR0211327A/pt

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Classifications

    • 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
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
    • G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/28—Investigating the spectrum
    • G01J3/42—Absorption spectrometry; Double beam spectrometry; Flicker spectrometry; Reflection spectrometry
    • 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
    • G01N21/01—Arrangements or apparatus for facilitating the optical investigation
    • G01N21/03—Cuvette constructions
    • G01N21/031—Multipass arrangements
    • 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
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/39—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using tunable lasers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/28—Investigating the spectrum
    • G01J3/42—Absorption spectrometry; Double beam spectrometry; Flicker spectrometry; Reflection spectrometry
    • G01J2003/423—Spectral arrangements using lasers, e.g. tunable
    • 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
    • G01N21/01—Arrangements or apparatus for facilitating the optical investigation
    • G01N21/03—Cuvette constructions
    • G01N21/0303—Optical path conditioning in cuvettes, e.g. windows; adapted optical elements or systems; path modifying or adjustment
    • G01N2021/0307—Insert part in cell
    • 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
    • G01N21/01—Arrangements or apparatus for facilitating the optical investigation
    • G01N21/03—Cuvette constructions
    • G01N21/05—Flow-through cuvettes
    • G01N2021/052—Tubular type; cavity type; multireflective
    • 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
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/39—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using tunable lasers
    • G01N2021/396—Type of laser source
    • G01N2021/399—Diode laser
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2201/00—Features of devices classified in G01N21/00
    • G01N2201/06—Illumination; Optics
    • G01N2201/061—Sources
    • G01N2201/06113—Coherent sources; lasers
    • G01N2201/0612—Laser diodes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2201/00—Features of devices classified in G01N21/00
    • G01N2201/06—Illumination; Optics
    • G01N2201/062—LED's

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Optics & Photonics (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

"DETECçãO DE GáS EMPREGANDO ESPECTROSCOPIA DE ABSORçãO DE LUZ". Constituído de uma célula para uso na medição da concentração de um gás pré-selecionado em uma amostra de gás que possua um eixo e um revestimento que envolva e esteja espaçado em relação ao eixo, fornecendo uma área de absorção anular, primeiro e segundo espelhos anulares apoiados em extremidades opostas do eixo, que possui uma abertura de entrada no primeiro espelho e uma abertura de saída na segunda fonte de luz, gerando um feixe de luz que passa através da abertura de entrada e adentra a área de absorção anular para ser repetidamente refletido entre os espelhos, finalmente saindo pela abertura de saída, um primeiro fotodetector indicando a intensidade do feixe de luz que adentra a abertura de entrada, um segundo fotodetector indicando a intensidade do feixe de luz existente e os instrumentos por meio dos quais a absorção do feixe é medida, e por meio dos quais a concentração do gás pré-selecionado é determinada.
BR0211327-9A 2002-09-06 2002-09-06 Detecção de gás empregando espectroscopia de absorção de luz BR0211327A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2002/028377 WO2004023114A1 (en) 2002-09-06 2002-09-06 Method and device for detecting gases by absorption spectroscopy

Publications (1)

Publication Number Publication Date
BR0211327A true BR0211327A (pt) 2004-12-21

Family

ID=31975586

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0211327-9A BR0211327A (pt) 2002-09-06 2002-09-06 Detecção de gás empregando espectroscopia de absorção de luz

Country Status (8)

Country Link
EP (2) EP1647820B1 (pt)
CN (2) CN101470072B (pt)
AT (1) ATE434757T1 (pt)
AU (1) AU2002339891A1 (pt)
BR (1) BR0211327A (pt)
DE (1) DE60232749D1 (pt)
ES (1) ES2328800T3 (pt)
WO (1) WO2004023114A1 (pt)

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Also Published As

Publication number Publication date
AU2002339891A1 (en) 2004-03-29
CN101470072B (zh) 2011-02-16
WO2004023114A1 (en) 2004-03-18
EP1535047B1 (en) 2009-06-24
ES2328800T3 (es) 2009-11-18
EP1535047A1 (en) 2005-06-01
EP1647820A2 (en) 2006-04-19
CN101470072A (zh) 2009-07-01
EP1647820B1 (en) 2006-12-20
CN100464178C (zh) 2009-02-25
CN1659428A (zh) 2005-08-24
ATE434757T1 (de) 2009-07-15
EP1647820A3 (en) 2006-05-03
DE60232749D1 (de) 2009-08-06

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