JP6651753B2 - 微粒子組成分析装置 - Google Patents
微粒子組成分析装置 Download PDFInfo
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- 239000002245 particle Substances 0.000 title description 21
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- 238000004364 calculation method Methods 0.000 claims description 25
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- 230000003287 optical effect Effects 0.000 description 6
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- 238000005070 sampling Methods 0.000 description 6
- 230000007423 decrease Effects 0.000 description 4
- 230000006641 stabilisation Effects 0.000 description 4
- 238000011105 stabilization Methods 0.000 description 4
- 238000004949 mass spectrometry Methods 0.000 description 3
- 239000011859 microparticle Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000000443 aerosol Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 1
- 235000011130 ammonium sulphate Nutrition 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000008821 health effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 239000003039 volatile agent Substances 0.000 description 1
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- H—ELECTRICITY
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- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J49/00—Particle spectrometers or separator tubes
- H01J49/02—Details
- H01J49/04—Arrangements for introducing or extracting samples to be analysed, e.g. vacuum locks; Arrangements for external adjustment of electron- or ion-optical components
- H01J49/0459—Arrangements for introducing or extracting samples to be analysed, e.g. vacuum locks; Arrangements for external adjustment of electron- or ion-optical components for solid samples
- H01J49/0463—Desorption by laser or particle beam, followed by ionisation as a separate step
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- G01N15/06—Investigating concentration of particle suspensions
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/44—Sample treatment involving radiation, e.g. heat
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- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0006—Calibrating gas analysers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0011—Sample conditioning
- G01N33/0019—Sample conditioning by preconcentration
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0026—General constructional details of gas analysers, e.g. portable test equipment using an alternating circulation of another gas
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/007—Arrangements to check the analyser
- G01N33/0072—Arrangements to check the analyser by generating a test gas
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0073—Control unit therefor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
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- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0011—Sample conditioning
- G01N33/0016—Sample conditioning by regulating a physical variable, e.g. pressure or temperature
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/007—Arrangements to check the analyser
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J49/00—Particle spectrometers or separator tubes
- H01J49/02—Details
- H01J49/04—Arrangements for introducing or extracting samples to be analysed, e.g. vacuum locks; Arrangements for external adjustment of electron- or ion-optical components
- H01J49/0422—Arrangements for introducing or extracting samples to be analysed, e.g. vacuum locks; Arrangements for external adjustment of electron- or ion-optical components for gaseous samples
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- Sampling And Sample Adjustment (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Description
Claims (16)
- 気体試料に含まれる微粒子の組成を分析する微粒子組成分析装置であって、
ガス分析器と、
前記気体試料にレーザー光を照射して生成した前記微粒子に起因する試料ガスと、比較ガスとを順次ガス分析器に導入する制御部と、
前記気体試料をフィルタにより清浄化処理した処理空気を生成する空気生成部と、
を備え、
前記比較ガスは、清浄化処理された前記処理空気にレーザー光を照射して生成したガスである、微粒子組成分析装置。 - 気体試料に含まれる微粒子の組成を分析する微粒子組成分析装置であって、
ガス分析器と、
気体試料にレーザー光を照射して生成した前記微粒子に起因する試料ガスと、比較ガスとを順次ガス分析器に導入する制御部と、を備え、
比較ガスは、清浄化処理された処理空気にレーザー光を照射して生成したガスであり、
前記制御部は、気体試料にレーザー光を連続照射して生成した試料ガスと、処理空気にレーザー光を連続照射して生成した比較ガスとを交互に繰り返しガス分析器に導入し、
前記制御部は、気体試料と処理空気の切り替えに対応する期間においてレーザー光の照射を中断する微粒子組成分析装置。 - ガス分析器で分析された、試料ガスと比較ガスのそれぞれに含まれる特定成分の差分量を演算する演算部を備える請求項1又は2に記載の微粒子組成分析装置。
- 制御部は、気体試料と処理空気を順次切り替えてレーザー光の照射部へ供給する請求項3に記載の微粒子組成分析装置。
- 制御部は、気体試料にレーザー光をパルス照射して生成した試料ガスと、処理空気にレーザー光をパルス照射して生成した比較ガスとを順次ガス分析器に導入する請求項3又は4に記載の微粒子組成分析装置。
- 制御部は、気体試料にレーザー光を連続照射して生成した試料ガスと、処理空気にレーザー光を連続照射して生成した比較ガスとを交互に繰り返しガス分析器に導入する請求項3又は4に記載の微粒子組成分析装置。
- 制御部は、予め決定された周期で試料ガスと比較ガスを交互にガス分析器に導入する請求項6に記載の微粒子組成分析装置。
- 制御部は、ガス分析器からの出力結果に基づいて調整したタイミングで試料ガスと比較ガスを交互にガス分析器に導入する請求項6に記載の微粒子組成分析装置。
- 気体試料に含まれる微粒子の組成を分析する微粒子組成分析装置であって、
ガス分析器と、
気体試料にレーザー光を照射して生成した前記微粒子に起因する試料ガスと、比較ガスとを順次ガス分析器に導入する制御部と、
レーザー光が照射され、微粒子を捕捉するための捕捉部と、を備え、
比較ガスは、気体試料にレーザー光が照射されない期間に前記捕捉部近傍に存在していたガスである微粒子組成分析装置。 - ガス分析器で分析された、試料ガスと比較ガスのそれぞれに含まれる特定成分の差分量を演算する演算部を備える請求項9に記載の微粒子組成分析装置。
- 制御部は、気体試料にレーザー光を照射して生成した試料ガスと、レーザー光を照射せず前記捕捉部近傍に存在していた比較ガスとを交互に繰り返しガス分析器に導入する請求項9又は10に記載の微粒子組成分析装置。
- 制御部は、予め決定された周期で試料ガスと比較ガスを交互にガス分析器に導入する請求項11に記載の微粒子組成分析装置。
- 制御部は、ガス分析器からの出力結果に基づいて調整したタイミングで試料ガスと比較ガスを交互にガス分析器に導入する請求項11に記載の微粒子組成分析装置。
- レーザー光が照射され、微粒子を捕捉するための捕捉部を更に備え、
制御部は、比較ガスを清浄化処理された処理空気にレーザー光を照射して生成したガスとするか、微粒子にレーザー光が照射されない期間に前記捕捉部近傍に存在していたガスとするかを決定する請求項1または2に記載の微粒子組成分析装置。 - 少なくとも気体試料を取り込む取込部と、
取込部から放出された微粒子を捕捉するための捕捉部と、
捕捉部に対してレーザー光を照射するレーザー装置と
を備える請求項1から8のいずれか1項に記載の微粒子組成分析装置。 - 少なくとも気体試料を取り込む取込部と、
捕捉部に対してレーザー光を照射するレーザー装置と、を備え、
前記捕捉部は前記取込部から放出された微粒子を捕捉する請求項9から14のいずれか1項に記載の微粒子組成分析装置。
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JP2015177729A JP6651753B2 (ja) | 2015-09-09 | 2015-09-09 | 微粒子組成分析装置 |
US15/216,703 US10283337B2 (en) | 2015-09-09 | 2016-07-22 | Microparticle composition analyzing apparatus |
CN201610592004.2A CN106525673B (zh) | 2015-09-09 | 2016-07-26 | 微粒子组成分析装置 |
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JP6651753B2 true JP6651753B2 (ja) | 2020-02-19 |
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DE102017130755A1 (de) * | 2017-12-20 | 2019-06-27 | Bilfinger Noell Gmbh | Vorrichtung zur Untersuchung einer Atmosphäre sowie Verwendung der Vorrichtung |
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---|---|---|---|---|
US4063446A (en) * | 1974-05-08 | 1977-12-20 | Hans Fuhrmann | Method of and apparatus for automatically detecting traces of organic solvent vapors in air |
US4316382A (en) * | 1980-07-21 | 1982-02-23 | Hewlett-Packard Company | Detector with intermittent flow |
US5214952A (en) * | 1991-08-16 | 1993-06-01 | Praxair Technology, Inc. | Calibration for ultra high purity gas analysis |
US6040574A (en) | 1998-03-05 | 2000-03-21 | Aerodyne Research, Inc. | Atmospheric-particle analyzer |
US6207460B1 (en) * | 1999-01-14 | 2001-03-27 | Extraction Systems, Inc. | Detection of base contaminants in gas samples |
US6432721B1 (en) * | 1999-10-29 | 2002-08-13 | Honeywell International Inc. | Meso sniffer: a device and method for active gas sampling using alternating flow |
AU8806401A (en) * | 2000-09-25 | 2002-04-02 | Otsuka Pharma Co Ltd | Isotopic gas analyzer and method of judging absorption capacity of carbon dioxide absorbent |
JP2002357548A (ja) * | 2001-06-01 | 2002-12-13 | Shimadzu Corp | 非分散型赤外吸収検出装置 |
US20030136176A1 (en) * | 2002-01-23 | 2003-07-24 | Frank Ruiz | Gas pressure/flow control and recovery system |
US7113277B2 (en) * | 2003-05-14 | 2006-09-26 | Lockheed Martin Corporation | System and method of aerosolized agent capture and detection |
JP4035580B2 (ja) * | 2004-11-09 | 2008-01-23 | 国立大学法人名古屋大学 | 粒子分析装置 |
DE102006015535A1 (de) * | 2006-03-31 | 2007-10-04 | Thermo Electron (Bremen) Gmbh | Verfahren und Vorrichtung zur Analyse von Isotopenverhältnissen |
WO2011114587A1 (ja) * | 2010-03-17 | 2011-09-22 | 国立大学法人 東京大学 | 微粒子組成分析方法及び微粒子組成分析装置 |
US20120096925A1 (en) * | 2010-10-22 | 2012-04-26 | Magee Scientific Corporation | Method and analyzer for determining the content of carbon-containing particles filtered from an air stream |
CN104422638A (zh) * | 2013-08-20 | 2015-03-18 | 夏普株式会社 | 检测空气样本中微小颗粒物的浓度的设备和方法 |
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US20170069476A1 (en) | 2017-03-09 |
US10283337B2 (en) | 2019-05-07 |
JP2017053718A (ja) | 2017-03-16 |
CN106525673B (zh) | 2021-04-06 |
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