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    IMR-MS DEVICE
    12.
    发明申请
    IMR-MS DEVICE 审中-公开

    公开(公告)号：US20180108522A1

    公开(公告)日：2018-04-19

    申请号：US15782281

    申请日：2017-10-12

    Applicant: IONICON ANALYTIK GESELLSCHAFT M.B.H.

    Inventor： Philipp Sulzer ,  Simone Jürschik ,  Jens Herbig ,  Alfons Jordan ,  Lukas Märk

    IPC: H01J49/16 ,  H01J49/14 ,  H01J49/28 ,  H01J49/42

    CPC classification number: H01J49/168 ,  H01J49/0009 ,  H01J49/0027 ,  H01J49/145 ,  H01J49/286 ,  H01J49/426

    Abstract: Ion-molecule-reaction-mass spectrometry (IMR-MS) device, comprising an ion source, an adjacent reaction chamber and a mass spectrometer subsequent to the reaction chamber, wherein the reaction chamber comprises an RF device for creating a temporally changing electromagnetic field and wherein an adjustable reduced electric field strength (E/N) can be applied to the reaction chamber, characterized by an input device for entering a desired reduced electric field strength (E/N) by an operator when operating said IMR-MS device for analysing a sample, and a controlling device that operates the IMR-MS device by adjusting the settings of the IMR-MS device relating to a defined data set of a pseudo reduced electric field strength (PE/N1,2) for the entered reduced electric field strength (E/N), wherein the pseudo reduced electric field strength (PE/N1,2) has been determined by analysing a first analyte (A1) in the IMR-MS device, wherein intensity signals (RS1) of at least two product ions of the analyte (A1) are recorded and wherein the settings of the IMR-MS device are changed until the measured intensity signal (IS1) ratios of the at least two product ions match reference intensity signal (RS1) ratios within a given tolerance level of the at least two product ions determined in an IMR-MS device comprising an ion source, an adjacent reaction chamber with a DC-drift tube and a mass spectrometer subsequent to the reaction chamber, wherein the reaction chamber is operated only with an activated DC-drift tube at a certain actual reduced electric field strength (Ea1/N), wherein these settings of the IMR-MS device relating to the pseudo reduced electric field strength (PE/N1) are stored in the controlling device, wherein the controlling device controls said IMR-MS device by performing analysis of the sample with the settings corresponding to the pseudo reduced electric field strengths (PE/N1).

    APPARATUS FOR MASS ANALYSIS OF ANALYTES BY SIMULTANEOUS POSITIVE AND NEGATIVE IONIZATION
    13.
    发明申请
    APPARATUS FOR MASS ANALYSIS OF ANALYTES BY SIMULTANEOUS POSITIVE AND NEGATIVE IONIZATION 审中-公开

    公开(公告)号：US20180068841A1

    公开(公告)日：2018-03-08

    申请号：US15560386

    申请日：2016-03-29

    Applicant: MERIDION, LLC

    Inventor： Nicholas WILTON

    IPC: H01J49/28 ,  H01J49/14 ,  H01J49/00 ,  H01J49/22 ,  H01J49/32 ,  H01J49/04

    CPC classification number: H01J49/286 ,  H01J49/0027 ,  H01J49/0422 ,  H01J49/147 ,  H01J49/22 ,  H01J49/328

    Abstract: Among other things, we describe methods and apparatus for the ionization of target molecular analytes of interest, e.g., for use in mass spectrometry. In some implementations, a thin molecular stream is emitted in either single or a split mode and encounters both an electron-impact ion source and trochoidal electron monochromator placed sequentially or coincidently. The first ion source emits high-energy electrons (˜70 eV) to generate characteristic positively-charged mass fragment spectra while the second source emits low-energy electrons in a narrow bandwidth to generate negative molecular ions or other ions via electron capture ionization. The dual ion source may be coupled to analytical instruments such as a gas chromatograph and to any number of mass analyzers such as a polarity switching quadrupole mass analyzer or to multiple mass analyzers.

    Method of electrostatic filtration
    14.
    发明授权
    Method of electrostatic filtration 失效
    静电过滤方法

    公开(公告)号：US3916188A

    公开(公告)日：1975-10-28

    申请号：US43469574

    申请日：1974-01-18

    Applicant: ANVAR

    Inventor： DEVIENNE FERNAND MARCEL

    IPC: H01J49/10 ,  G01N27/62 ,  H01J49/14 ,  H01J49/28 ,  H01J39/34 ,  B01D59/44

    CPC classification number: H01J49/286 ,  H01J49/14

    Abstract: Electrostatic filtration of secondary ions of mass m in a given mass ratio with a primary ion of mass M which has formed the secondary ions by fission is carried out by a method which consists in forming a singly-charged primary ion of the substance having a molecular mass M and extracting the ion at a voltage V1 with respect to ground, in causing the primary ion to cross a potential barrier V2, in producing the dissociation of said ion into at least two fragments of secondary ions, in extracting the fragment ion of mass m at a voltage V2, in carrying out a filtration in an electrostatic analyzer through which only the ions of energy eV'''' are permitted to pass, in detecting the ions which have thus been filtered and the mass m of which is such that

    D R A W I N G

    Abstract translation: 通过裂变形成二次离子的质量为M的质量m的质量m的二次离子的静电过滤通过一种方法进行，该方法包括形成具有分子的物质的单一带电的一次离子 质量M并且以相对于地面的电压V1提取离子，在使主离子穿过势垒V2时，在产生质量的碎片离子中产生离子到至少两个次级离子的片段中的解离 在电压V2下进行过滤，在静电分析仪中进行过滤，在静电分析仪中仅允许能量eV“的离子通过，以检测已经被过滤的离子，其质量m使得M V1 - V2 =。 m V“ - V2

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