JP4522866B2 - 小型イオン移動度分光計用のパルス放電イオン源 - Google Patents
小型イオン移動度分光計用のパルス放電イオン源 Download PDFInfo
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J49/00—Particle spectrometers or separator tubes
- H01J49/02—Details
- H01J49/10—Ion sources; Ion guns
- H01J49/16—Ion sources; Ion guns using surface ionisation, e.g. field-, thermionic- or photo-emission
- H01J49/168—Ion sources; Ion guns using surface ionisation, e.g. field-, thermionic- or photo-emission field ionisation, e.g. corona discharge
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/62—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode
- G01N27/622—Ion mobility spectrometry
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Description
Claims (17)
- 分析装置用のパルス放電の方法であって、
イオンドリフトチャンバ内の第1の位置にある非放射性材料からなるコロナ放電電極を通過するように試料ガスと反応ガスを流すことと、
前記試料ガスと前記反応ガスからイオンを生成させるコロナを発生させるために前記コロナ放電電極にパルス電圧を印加することと、
イオン注入ゲートもグリッド電極も使用せずに、ドリフトガスによって供給される媒体を通り抜けて前記イオンドリフトチャンバ内の第2の位置へ前記イオンをドリフトさせるために、前記イオンドリフトチャンバに直流バイアスを印加することと、
前記ドリフトチャンバ内の前記第2の位置で前記イオンを検出することと、
前記イオンが前記コロナ放電電極から前記ドリフトチャンバ内の前記第2の位置までドリフトする時間を計測することと、
前記試料ガスの同一性を決定するために前記の計測された時間を用いることを備え、
前記分析装置は、前記非放射性材料からなるコロナ放電電極と、前記コロナ放電電極に印加されるパルス電圧の制御装置とを備えた大きさであって、イオンがドリフトチャンネルに導入される前記ドリフトチャンバの端部にイオン注入ゲートもグリッド電極も有していないことを特徴とする方法。 - 前記コロナ放電電極に前記パルス電圧を印加することは、さらに、制御可能なベース直流成分と制御可能な変動パルス成分とからなるパルス電圧を生成させることを含むことを特徴とする請求項1記載の方法。
- 前記パルス電圧は、40ナノ秒から100マイクロ秒の範囲内で選択されたパルス幅を有することを特徴とする請求項1記載の方法。
- 前記パルス電圧は、0.2〜3.3kVの範囲内で選択されたパルス高さを有することを特徴とする請求項1記載の方法。
- 前記パルス電圧は、約20Hzの周波数を有することを特徴とする請求項1記載の方法。
- さらに、前記ドリフトチャンバ内の前記第2の位置の近傍の前記ドリフトチャンバ内へ前記ドリフトガスを流すことを備えたことを特徴とする請求項1記載の方法。
- さらに、前記試料ガスからのイオンが検出電極へ到達する時間を記録することと、スレッショルド電圧で前記検出電極において検出された前記試料ガスからのイオンを比較することと、前記スレッショルド電圧を上回ったときに、前記スレッショルド電圧と関連した物質の検出を表示する視覚ディスプレイをユーザーへ与えることを備えたことを特徴とする請求項1記載の方法。
- 前記ドリフトチャンネルは、直径が1.7mmから2.5mmまでの範囲であって、長さが35mmから50mmまでの範囲であることを特徴とする請求項1記載の方法。
- ガスの反応とガスの運動のための細長いチャンバを形成する本体を備え、前記チャンバは試料ガスを受け入れるための第1の入り口を有するとともに反応ガスとドリフトガスを受け入れるための第2の入り口を有し、
前記試料ガスの流路中の前記チャンバの第1の位置において前記本体中に位置する非放射性材料からなるコロナ放電電極と対極と、
前記コロナ放電電極から空間を空けた前記チャンバの第2の位置におけるイオン検出電極を備え、
一対の電極が前記チャンバの全長に沿って直流バイアス電圧を印加するために備えられ、
前記コロナ放電電極への電圧の印加を制御し、前記コロナ放電電圧の印加で開始して前記イオン検出電極におけるイオンの検出で終了する間隔を計測する、電子制御装置を備え、
前記非放射性材料からなるコロナ放電電極と、前記コロナ放電電極に印加されるパルス電圧の制御装置とを備えた大きさであって、イオンがドリフトチャンネルに導入される前記ドリフトチャンバの端部にイオン注入ゲートもグリッド電極も有していないことを特徴とする分析装置。 - 前記チャンバを形成する前記本体は、相隔たり誘電性のスペーサリングによって分離された少なくとも4つの電極リングを有し、前記電極リングと前記スペーサリングは、少なくとも前記チャンバの一部をともに形成する中央開口部を有することを特徴とする請求項9記載の装置。
- 前記コロナ放電電極は、端部の電極の開口部を通って前記細長いチャンバへ軸方向又は横方向のいずれかに配置され、前記コロナ放電電極の対極を形成する最後の電極リングの隣の電極から間隔を空けて先端を有することを特徴とする請求項9記載の装置。
- 前記電子制御装置は、制御可能なベース直流コンポーネントと制御可能な変動パルスコンポーネントとをさらに備えた前記コロナ放電電極へ電圧を印加することが実施可能であることを特徴とする請求項9記載の装置。
- 前記ドリフトチャンネルは、直径が1.7mmから2.5mmまでの範囲であって、長さが35mmから50mmまでの範囲であることを特徴とする請求項9記載の装置。
- 前記電子制御装置は、開始パルスを発生させる超小型電子CPUをさらに備え、前記CPUは、アンプを経由して前記検出電極に接続されるとともに、検出されたイオン信号を受信するデジタイザーに接続されていることを特徴とする請求項9記載の装置。
- 前記電子制御装置は視覚ディスプレイに接続されるとともに、前記電子制御装置は、イオンドリフト時間を計測することによって試料ガスを同定し、スレッショルド電圧で前記検出電極において検出されたイオンを比較し、前記スレッショルド電圧を上回ったときに、前記スレッショルド電圧と関連した物質の検出を表示するために前記視覚ディスプレイを通してユーザーへ信号を与えることを特徴とする請求項14記載の装置。
- 前記電子制御装置は、ベース直流コンポーネントと変動パルスコンポーネントをさらに備えた前記コロナ放電電極へ電圧を印加するための手段をさらに備えたことを特徴とする請求項9記載の装置。
- 前記ドリフトチャンバ内の前記第2の位置の近傍における前記ドリフトチャンバ内へ第2のガスを流すための手段と、前記チャンバ内へ反応ガスを流すための手段をさらに備えたことを特徴とする請求項9記載の装置。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US10/254,749 US6822225B2 (en) | 2002-09-25 | 2002-09-25 | Pulsed discharge ionization source for miniature ion mobility spectrometers |
PCT/US2003/028269 WO2004081556A2 (en) | 2002-09-25 | 2003-09-10 | Pulsed discharge ionization source for miniature ion mobility spectrometers |
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JP2006507508A JP2006507508A (ja) | 2006-03-02 |
JP4522866B2 true JP4522866B2 (ja) | 2010-08-11 |
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JP2004569412A Expired - Lifetime JP4522866B2 (ja) | 2002-09-25 | 2003-09-10 | 小型イオン移動度分光計用のパルス放電イオン源 |
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US (1) | US6822225B2 (ja) |
EP (1) | EP1546699B1 (ja) |
JP (1) | JP4522866B2 (ja) |
AU (1) | AU2003303952A1 (ja) |
CA (1) | CA2500171A1 (ja) |
WO (1) | WO2004081556A2 (ja) |
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CN107941897B (zh) * | 2017-11-30 | 2024-01-02 | 北京市北分仪器技术有限责任公司 | 一种双极性可控脉冲电晕放电电离源及其离子迁移谱仪 |
US10992175B2 (en) | 2018-06-15 | 2021-04-27 | Google Llc | Communication circuit for 2-wire protocols between HVAC systems and smart-home devices |
CN110289203B (zh) * | 2019-06-03 | 2021-03-09 | 清华大学深圳研究生院 | 一种电晕放电电离源结构及离子迁移谱仪 |
DE102019125482B4 (de) * | 2019-09-23 | 2023-02-09 | Gottfried Wilhelm Leibniz Universität Hannover | Ionenmobilitätsspektrometer |
CN113675069A (zh) * | 2021-08-20 | 2021-11-19 | 苏州微木智能系统有限公司 | 一种离子迁移系统 |
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US4283291A (en) * | 1977-01-24 | 1981-08-11 | Union Carbide Corporation | Corona reaction method and apparatus |
JP3096986B2 (ja) | 1991-12-03 | 2000-10-10 | グレイズビー ダイナミックス リミテッド | コロナ放電イオン源 |
JPH05242858A (ja) * | 1992-02-27 | 1993-09-21 | Hitachi Ltd | ガス分析装置 |
US5371364A (en) * | 1993-02-18 | 1994-12-06 | Thermo King Corporation | Practical implementations for ion mobility sensor |
US5405781A (en) * | 1993-09-21 | 1995-04-11 | Barringer Research Limited | Ion mobility spectrometer apparatus and method, incorporating air drying |
IL115984A (en) * | 1995-11-14 | 1998-08-16 | Yeda Res & Dev | Low-vacuum mass spectrometer |
GB9602158D0 (en) * | 1996-02-02 | 1996-04-03 | Graseby Dynamics Ltd | Corona discharge ion sources for analytical instruments |
US5789745A (en) * | 1997-10-28 | 1998-08-04 | Sandia Corporation | Ion mobility spectrometer using frequency-domain separation |
US6822224B2 (en) * | 2000-03-14 | 2004-11-23 | National Research Council Canada | Tandem high field asymmetric waveform ion mobility spectrometry (FAIMS)tandem mass spectrometry |
US6690005B2 (en) * | 2000-08-02 | 2004-02-10 | General Electric Company | Ion mobility spectrometer |
GB0107311D0 (en) * | 2001-03-23 | 2001-05-16 | Secr Defence | Corona ionisation source |
-
2002
- 2002-09-25 US US10/254,749 patent/US6822225B2/en not_active Expired - Lifetime
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2003
- 2003-09-10 AU AU2003303952A patent/AU2003303952A1/en not_active Abandoned
- 2003-09-10 EP EP03816115.4A patent/EP1546699B1/en not_active Expired - Lifetime
- 2003-09-10 WO PCT/US2003/028269 patent/WO2004081556A2/en active Application Filing
- 2003-09-10 JP JP2004569412A patent/JP4522866B2/ja not_active Expired - Lifetime
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AU2003303952A8 (en) | 2004-09-30 |
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CA2500171A1 (en) | 2004-09-23 |
WO2004081556A3 (en) | 2004-12-29 |
WO2004081556A2 (en) | 2004-09-23 |
EP1546699B1 (en) | 2015-02-18 |
US6822225B2 (en) | 2004-11-23 |
JP2006507508A (ja) | 2006-03-02 |
AU2003303952A1 (en) | 2004-09-30 |
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