JPH07500422A - 分光分析超臨界流体汚染モニタ - Google Patents
分光分析超臨界流体汚染モニタInfo
- Publication number
- JPH07500422A JPH07500422A JP5520216A JP52021693A JPH07500422A JP H07500422 A JPH07500422 A JP H07500422A JP 5520216 A JP5520216 A JP 5520216A JP 52021693 A JP52021693 A JP 52021693A JP H07500422 A JPH07500422 A JP H07500422A
- Authority
- JP
- Japan
- Prior art keywords
- contaminants
- supercritical fluid
- cleaning
- attenuated total
- reflection plate
- 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.)
- Granted
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
- G01N21/55—Specular reflectivity
- G01N21/552—Attenuated total reflection
-
- 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
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/94—Investigating contamination, e.g. dust
Abstract
Description
Claims (10)
- (1)超臨界流体流中の汚染物質の存在を検出するシステムにおいて、 前記流体流から少なくとも超臨界流の一部を除去して超臨界流体のサンプル流と して前記一部分を汚染物質測定領域を限定する壁を有する容器に導入するサンプ リング手段と、前記サンプル流をガスに変換するのに必要なレベル以下に前記測 定領域内の圧力を維持し、前記サンプル流中に存在する前記汚染物質を非気体形 態で存在させる圧力解放手段と、前記測定領域内に位置する外部表面を有し、前 記非気体形態の汚染物質が前記外部表面に付着し、電磁放射入口と電磁放射出口 とを有する減衰全反射プレートと、電磁放射を前記入口で前記減衰全反射プレー トに導入し、前記プレートに導入される前記放射は前記プレート内に残るが前記 出口で前記プレートを出る変更された電磁放射を生成するために前記プレートの 前記外部表面に存在する前記汚染物質と相互作用させる手段と、 前記超臨界流体流中に存在する前記汚染物質の検出を行うために前記出口で前記 減衰全反射プレートを出るとき前記変更された電磁放射を検出する手段とを具備 している超臨界流体の流動中の汚染物質の存在を検出するシステム。
- (2)前記電磁放射を導入する手段が赤外線、可視または紫外線の電磁放射を前 記減衰全反射プレートの前記入口に導入する請求項1記載のシステム。
- (3)前記サンプリング手段が前記サンプル流を前記測定領域に制御可能に導入 するために開口位置と閉口位置との間で動作可能なサンプリングバルプを含む請 求項1記載のシステム。
- (4)前記減衰全反射プレートの前記外部表面から前記汚染物質を周期的に洗浄 する手段をさらに含む請求項1記載のシステム。
- (5)前記減衰全反射プレートから前記汚染物質を周期的に洗浄する手段は、 前記容器の洗浄流体入口と、 前記外部表面から除去した前記汚染物質を含む使用された洗浄流体を生成するた めに前記減衰全反射プレートの前記外部表面と接触するように洗浄流体を導入す る手段と、前記使用された洗浄流体を前記容器から除去する手段とを具備する請 求項4記載のシステム。
- (6)前記減衰全反射プレートから前記汚染物質を周期的に洗浄する手段は、 汚染された超臨界流体を形成するために前記汚染物質を除去するための前記測定 領域中の超臨界流体で前記減衰全反射プレートを処理する手段と、 前記測定領域から前記汚染された超臨界流体を除去する手段とを具備している請 求項4記載のシステム。
- (7)超臨界流体流中の汚染物質の存在を検出する方法において、 前記流動体流から超臨界流体の少なくとも一部分を除去して超臨界流体の前記一 部分をサンプル流として汚染物質測定領域に導入し、 前記測定領域内の圧力を前記サンプル流がガスに変換するのに必要なレベル以下 に維持し、前記サンプル流中に存在する前記汚染物質を非気体形態で存在させ、 前記超臨界流体流中に存在する前記汚染物質の検出を行うためにその外部表面に 付着された非気体の汚染物質の存在を分光分析的に検出するように減衰全反射プ レートを使用する段階を有する汚染物質の存在検出方法。
- (8)前記プレートの前記外部表面に存在する前記汚染物質と相互作用するため 前記減衰全反射プレートに赤外線、可視または紫外線電磁放射が導入されて変更 された赤外線、可視または紫外線電磁放射を生成し、前記超臨界流体の流中の前 記汚染物質の検出を行うために前記変更された赤外線、可視または紫外線電磁放 射が前記減衰全反射プレートを出るときに検出される請求項7記載の方法。
- (9)前記測定領域中の前記圧力がほぼ周囲圧力に維持される請求項7記載の方 法。
- (10)超臨界流体または洗浄溶剤を使用して前記減衰全反射プレートの前記外 部表面から前記汚染物質を周期的に洗浄する段階をさらに含む請求項7記載の方 法。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/881,941 US5777726A (en) | 1992-05-12 | 1992-05-12 | Spectrophotometric supercritical fluid contamination monitor |
US881941 | 1997-06-25 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH07500422A true JPH07500422A (ja) | 1995-01-12 |
JP2773980B2 JP2773980B2 (ja) | 1998-07-09 |
Family
ID=25379528
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5520216A Expired - Lifetime JP2773980B2 (ja) | 1992-05-12 | 1993-04-12 | 分光分析超臨界流体汚染モニタ |
Country Status (6)
Country | Link |
---|---|
US (1) | US5777726A (ja) |
EP (1) | EP0594838B1 (ja) |
JP (1) | JP2773980B2 (ja) |
DE (1) | DE69301521T2 (ja) |
TW (1) | TW225004B (ja) |
WO (1) | WO1993023737A1 (ja) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5460973A (en) * | 1994-12-20 | 1995-10-24 | Ceramoptec Industries Inc. | Method for continuous determination of volatile impurities in contaminated medium |
GB9600461D0 (en) * | 1996-01-08 | 1996-03-13 | Ugcs University Of Glamorgan C | Analytical apparatus |
AT410322B (de) * | 2001-04-05 | 2003-03-25 | Lendl Bernhard Dipl Ing Dr Ins | Verfahren zur prozessüberwachung von biotechnologischen prozessen |
WO2003062816A1 (en) * | 2002-01-22 | 2003-07-31 | Praxair Technology, Inc. | Method for analyzing impurities in carbon dioxide |
US6927393B2 (en) * | 2002-12-16 | 2005-08-09 | International Business Machines Corporation | Method of in situ monitoring of supercritical fluid process conditions |
US20040168709A1 (en) * | 2003-02-27 | 2004-09-02 | Drumm James M. | Process control, monitoring and end point detection for semiconductor wafers processed with supercritical fluids |
US7092101B2 (en) * | 2003-04-16 | 2006-08-15 | Duke University | Methods and systems for static multimode multiplex spectroscopy |
US6857437B2 (en) * | 2003-06-18 | 2005-02-22 | Ekc Technology, Inc. | Automated dense phase fluid cleaning system |
US20050288485A1 (en) * | 2004-06-24 | 2005-12-29 | Mahl Jerry M | Method and apparatus for pretreatment of polymeric materials utilized in carbon dioxide purification, delivery and storage systems |
EP1957960B1 (en) * | 2005-12-05 | 2011-03-30 | E.I. Du Pont De Nemours And Company | System for measuring a property of a fluid using interrogating radiation |
US7423755B2 (en) * | 2005-12-05 | 2008-09-09 | E.I. Du Pont De Nemours And Company | Liquid measurement cell having a transparent partition therein |
US7542143B2 (en) * | 2005-12-05 | 2009-06-02 | E.I. Du Pont De Nemours And Company | Liquid measurement cell having a pressurized air cavity therein |
US7719686B2 (en) * | 2005-12-05 | 2010-05-18 | E.I. Du Pont De Nemours And Company | System for measuring a color property of a liquid |
US7477394B2 (en) * | 2005-12-05 | 2009-01-13 | E.I Du Pont De Nemours & Company | Method for measuring a color property of a liquid using a liquid measurement cell having a transparent partition therein |
CN101322017A (zh) * | 2005-12-05 | 2008-12-10 | 纳幕尔杜邦公司 | 用于测量液体颜色性质的探头设备 |
US20100072059A1 (en) * | 2008-09-25 | 2010-03-25 | Peters Michael J | Electrolytic System and Method for Enhanced Radiological, Nuclear, and Industrial Decontamination |
DE102011085394B4 (de) | 2011-10-28 | 2015-04-02 | INSTITUT FüR MIKROTECHNIK MAINZ GMBH | Vorrichtung zur Analyse eines Fluids mittels Evaneszenzfeldspektroskopie und Dielektrophorese |
US11119049B2 (en) * | 2015-07-21 | 2021-09-14 | Fluidsens International Inc. | Particles in liquid detection method and particles in liquid detection system and method to detect particles in the air |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3277030D1 (en) * | 1981-09-18 | 1987-09-24 | Battelle Memorial Institute | Method and apparatus for the determination of species in solution with an optical wave-guide |
EP0184600B1 (en) * | 1984-12-10 | 1990-03-14 | Prutec Limited | Method for optically ascertaining parameters of species in a liquid analyte |
US4568447A (en) * | 1985-07-29 | 1986-02-04 | Uop Inc. | Process for the removal of trace quantities of hydrocarbonaceous compounds from an aqueous stream |
JPS6295102A (ja) * | 1985-10-21 | 1987-05-01 | Sumitomo Heavy Ind Ltd | 超臨界流体抽出装置 |
JPS61269063A (ja) * | 1986-04-28 | 1986-11-28 | Japan Spectroscopic Co | 超臨界流体を用いた多波長同時検出による分析装置 |
US5165005A (en) * | 1988-01-29 | 1992-11-17 | Fiberchem Inc. | Planar and other waveguide refractive index sensors using metal cladding |
US5068040A (en) * | 1989-04-03 | 1991-11-26 | Hughes Aircraft Company | Dense phase gas photochemical process for substrate treatment |
US5036204A (en) * | 1989-07-24 | 1991-07-30 | Philip Morris, Inc. | Continuous concentration monitoring by circular dichroism |
US5213619A (en) * | 1989-11-30 | 1993-05-25 | Jackson David P | Processes for cleaning, sterilizing, and implanting materials using high energy dense fluids |
US5082629A (en) * | 1989-12-29 | 1992-01-21 | The Board Of The University Of Washington | Thin-film spectroscopic sensor |
-
1992
- 1992-05-12 US US07/881,941 patent/US5777726A/en not_active Expired - Lifetime
-
1993
- 1993-04-12 EP EP93912158A patent/EP0594838B1/en not_active Expired - Lifetime
- 1993-04-12 DE DE69301521T patent/DE69301521T2/de not_active Expired - Lifetime
- 1993-04-12 WO PCT/US1993/003324 patent/WO1993023737A1/en active IP Right Grant
- 1993-04-12 JP JP5520216A patent/JP2773980B2/ja not_active Expired - Lifetime
- 1993-04-28 TW TW082103307A patent/TW225004B/zh active
Also Published As
Publication number | Publication date |
---|---|
JP2773980B2 (ja) | 1998-07-09 |
US5777726A (en) | 1998-07-07 |
DE69301521D1 (de) | 1996-03-21 |
EP0594838B1 (en) | 1996-02-07 |
EP0594838A1 (en) | 1994-05-04 |
TW225004B (ja) | 1994-06-11 |
WO1993023737A1 (en) | 1993-11-25 |
DE69301521T2 (de) | 1996-07-18 |
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