[go: up one dir, main page]

JPS5459188A - Infrared spectrophotometer apparatus of gas chromatography - Google Patents

Infrared spectrophotometer apparatus of gas chromatography

Info

Publication number
JPS5459188A
JPS5459188A JP12630877A JP12630877A JPS5459188A JP S5459188 A JPS5459188 A JP S5459188A JP 12630877 A JP12630877 A JP 12630877A JP 12630877 A JP12630877 A JP 12630877A JP S5459188 A JPS5459188 A JP S5459188A
Authority
JP
Japan
Prior art keywords
cell
gas
valve
opto
trap
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.)
Pending
Application number
JP12630877A
Other languages
Japanese (ja)
Inventor
Kunihiko Washio
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP12630877A priority Critical patent/JPS5459188A/en
Publication of JPS5459188A publication Critical patent/JPS5459188A/en
Pending legal-status Critical Current

Links

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
    • G01N21/1702—Systems in which incident light is modified in accordance with the properties of the material investigated with opto-acoustic detection, e.g. for gases or analysing solids
    • 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
    • G01N21/1702—Systems in which incident light is modified in accordance with the properties of the material investigated with opto-acoustic detection, e.g. for gases or analysing solids
    • G01N2021/1704—Systems in which incident light is modified in accordance with the properties of the material investigated with opto-acoustic detection, e.g. for gases or analysing solids in gases

Landscapes

  • 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)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

PURPOSE:To make possible the spectral measurement of high sensitivity even if the separated component gas is of low concentration by radiating wavelength variable laser to the specimen introduced into an opto-acoustic cell. CONSTITUTION:The effluent components from a gas chromatograph 1 are captured in a trap 5 via valve 3 and channel changeover valve 4. Next, the valve 3 is changed over to a carrier gas generator 2 and the carrier gas is introduced into the trap 5 which has been elevated of temperature, whereby the captured components are introduced into an opto-acoustic cell 7. Next, when the component gas having been introduced into the cell 7 absorbes modulated laser light by the chopper 11 from a wavelength variable laser 10, the absorption energy becomes heat, causing the sound pressure of the cell 7 to change. This change in the sound pressure is detected with a microphone 12, and is amplified with a lock-im amplifier 13, the output whereof is then divided by the output of a laser power meter 14 in a ratio meter 16, thus the concentration of the component may be detected as a function of wavelengths in a recorder 18 with high sensitivity.
JP12630877A 1977-10-19 1977-10-19 Infrared spectrophotometer apparatus of gas chromatography Pending JPS5459188A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12630877A JPS5459188A (en) 1977-10-19 1977-10-19 Infrared spectrophotometer apparatus of gas chromatography

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12630877A JPS5459188A (en) 1977-10-19 1977-10-19 Infrared spectrophotometer apparatus of gas chromatography

Publications (1)

Publication Number Publication Date
JPS5459188A true JPS5459188A (en) 1979-05-12

Family

ID=14931966

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12630877A Pending JPS5459188A (en) 1977-10-19 1977-10-19 Infrared spectrophotometer apparatus of gas chromatography

Country Status (1)

Country Link
JP (1) JPS5459188A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5610230A (en) * 1979-07-04 1981-02-02 Hitachi Ltd Optical sound spectroscopic analyzer
DE3139917A1 (en) * 1980-10-07 1982-06-24 Tsuguo Kodaira Tokyo Sawada "PHOTOACOUSTIC FLOW DETECTOR"
GB2357844A (en) * 1997-03-07 2001-07-04 Optel Instr Ltd Normalising a photoacoustic signal in a biological measurement system
JP2015219026A (en) * 2014-05-14 2015-12-07 昭和電工株式会社 Photoacoustic spectroscopy method and photoacoustic spectroscopy apparatus

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5610230A (en) * 1979-07-04 1981-02-02 Hitachi Ltd Optical sound spectroscopic analyzer
DE3139917A1 (en) * 1980-10-07 1982-06-24 Tsuguo Kodaira Tokyo Sawada "PHOTOACOUSTIC FLOW DETECTOR"
GB2357844A (en) * 1997-03-07 2001-07-04 Optel Instr Ltd Normalising a photoacoustic signal in a biological measurement system
GB2357846A (en) * 1997-03-07 2001-07-04 Optel Instr Ltd Establishing a photoacoustic signal in a biological measurement system
GB2357846B (en) * 1997-03-07 2001-10-17 Optel Instr Ltd Biological measurement system
JP2015219026A (en) * 2014-05-14 2015-12-07 昭和電工株式会社 Photoacoustic spectroscopy method and photoacoustic spectroscopy apparatus

Similar Documents

Publication Publication Date Title
CN111707634B (en) Multichannel gas concentration detection system and method based on mid-infrared absorption spectrum
DE60141642D1 (en) ATEMGASANALYSIERER
GB763556A (en) Improved method of and apparatus for spectrochemical analysis
DK56087A (en) METHOD AND APPARATUS FOR DETERMINING GAS FOR SUBSTANCES
EP0990134A4 (en) Spectroscopic determination of characteristics of biological material
EP0250029A3 (en) Method of and apparatus for spectroscopically analysing samples
JPS608735B2 (en) How to measure contaminated gas
ES8602252A1 (en) Breath analyzer.
JPS5459188A (en) Infrared spectrophotometer apparatus of gas chromatography
JPS5453579A (en) Infrared ray multicomponent gas analysis apparatus
DE3279628D1 (en) Procedure for the production of a humidity-sensitive interference mirror, and procedure and equipment for the measurement of the humidity using said mirror
CN117664895A (en) Active gas detection system based on high-temperature infrared radiation source
JPS56150332A (en) Infrared spectroscopic analysis method
TAKIUCHI et al. Measurement of leaf temperature by means of infrared thermometer in connection with plant physiological information
JPS5487588A (en) Infrared spectral analytical apparatus
JPS5461587A (en) Gas analyzer using ultrared ray
JPS5776422A (en) Measuring apparatus of spectral characteristic
RU1340302C (en) Radiant energy measuring method
RU2044303C1 (en) Gas analyzer
JPS5439676A (en) Gas detector
FR2353049A1 (en) DEVICE FOR SPECTRAL LASER ANALYSIS
JPS5548637A (en) Photoacoustic detector
JPS571239A (en) Evaluating device for single crystal of semiconductor
JPS5646436A (en) Temperature detector
JPS57101732A (en) Method for measuring temperature using raman light