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    SYSTEMS AND METHODS FOR ANALYZING A SAMPLE
    124.
    发明申请
    SYSTEMS AND METHODS FOR ANALYZING A SAMPLE 有权
    用于分析样品的系统和方法

    公开(公告)号：US20150108346A1

    公开(公告)日：2015-04-23

    申请号：US14305489

    申请日：2014-06-16

    Applicant: Purdue Research Foundation

    Inventor： Zheng Ouyang ,  Tsung-Chi Chen

    IPC: H01J49/04 ,  H01J49/24 ,  H01J49/10 ,  H01J49/26

    CPC classification number: H01J49/0422 ,  H01J49/0013 ,  H01J49/0495 ,  H01J49/10 ,  H01J49/168 ,  H01J49/24 ,  H01J49/26

    Abstract: The invention generally relates to systems and methods for sample analysis. In certain embodiments, the invention provides systems for analyzing a sample that include an electric source, a vacuum chamber including a conducting member, in which the conducting member is coupled to the electric source, a sample introduction member coupled to the vacuum chamber, and a mass analyzer. The system is configured such that a distal end of the sample introduction member resides within the vacuum chamber and proximate the conducting member, such that an electrical discharge may be produced between the sample introduction member and the conducting member. A neutral gas that has been introduced into the vacuum chamber interacts with the generated discharge, producing ions within the vacuum chamber that are subsequently transferred into the mass analyzer in the vacuum chamber.

    Abstract translation: 本发明一般涉及用于样品分析的系统和方法。 在某些实施例中，本发明提供了用于分析包括电源的样品，包括导电构件的真空室的系统，其中导电构件耦合到电源，耦合到真空室的样品引入构件和 质量分析仪 该系统构造成使得样品引入构件的远端位于真空室内并且靠近导电构件，使得可以在样品引入构件和导电构件之间产生放电。 已经引入真空室的中性气体与产生的排放物相互作用，在真空室内产生离子，随后将其转移到真空室中的质量分析器中。

    Discontinuous atmospheric pressure interface
    128.
    发明授权
    Discontinuous atmospheric pressure interface 有权
    不连续的大气压力界面

    公开(公告)号：US08853627B2

    公开(公告)日：2014-10-07

    申请号：US14227563

    申请日：2014-03-27

    Applicant: Purdue Research Foundation

    Inventor： Zheng Ouyang ,  Liang Gao ,  Robert Graham Cooks

    IPC: H01J49/04 ,  H01J49/10 ,  H01J49/24 ,  H01J49/00

    CPC classification number: H01J49/24 ,  H01J49/00 ,  H01J49/0013 ,  H01J49/0027 ,  H01J49/0031 ,  H01J49/004 ,  H01J49/04 ,  H01J49/0404 ,  H01J49/0422 ,  H01J49/0495 ,  H01J49/10 ,  H01J49/165 ,  H01J49/26

    Abstract: A method of interfacing atmospheric pressure ion sources, including electrospray and desorption electrospray ionization sources, to mass spectrometers, for example miniature mass spectrometers, in which the ionized sample is discontinuously introduced into the mass spectrometer. Discontinuous introduction improves the match between the pumping capacity of the instrument and the volume of atmospheric pressure gas that contains the ionized sample. The reduced duty cycle of sample introduction is offset by operation of the mass spectrometer under higher performance conditions and by ion accumulation at atmospheric pressure.

    Abstract translation: 将大气压力离子源（包括电喷雾和解吸电喷雾离子源）与将其离子化样品不连续地引入质谱仪的质谱仪（例如微型质谱仪）进行接口的方法。 不连续的介绍改善了仪器的抽吸能力与含有电离样品的大气压气体的体积之间的匹配。 样品引入的减少的占空比通过质谱仪在较高性能条件下的操作和大气压下的离子积聚来抵消。

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