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    • 91. 发明授权
    • VORTEX GAS FLOW INTERFACE FOR ELECTROSPRAY MASS SPECTROMETRY
    • 气体回旋过渡件,电力喷雾质谱
    • EP1118097B1
    • 2006-11-22
    • EP99954671.6
    • 1999-09-27
    • Varian, Inc.
    • WELLS, Gregory, J.TONG, Roger, C.YEE, Peter, P.
    • H01J49/04
    • H01J49/165G01N30/7246G01N30/7266H01J49/049
    • An apparatus for efficiently removing a carrier liquid from charged liquid drops formed by electrospray ionization prior to introduction of the drops into a mass spectrometer (209). A central capillary tube (210) connects a region of the low pressure vacuum system containing the mass spectrometer (209) with a region at substantially atmospheric pressure, in which ion formation is produced by electrospray ionization. Heated, drying gas flows through a plurality of vortex forming channels (214) symmetrically disposed about the axis of the central capillary tube (210) which provides an entrance to the spectrometer (209). Gas exiting the vortex forming channels (214) enters tangentially to the inside of a vortex drying tube (222) with a small helix angle, causing the gas to swirl around the tube, forming a vortex. The vortex drying gas flows in a direction that is substantially transverse to the axis of the entrance capillary into the mass spectrometer (209). The vortex gas intersects the electrospray, separating undesired large drops from smaller drops by a vortex gas flow which imparts a centrifugal force to the drops. The largest drops are driven to the wall of the drying tube (222) and caused to fragment into smaller drops by evaporation and collision with the wall (222).
    • 92. 发明公开
    • VORTEX GAS FLOW INTERFACE FOR ELECTROSPRAY MASS SPECTROMETRY
    • 气体回旋过渡件,电力喷雾质谱
    • EP1118097A1
    • 2001-07-25
    • EP99954671.6
    • 1999-09-27
    • Varian, Inc.
    • WELLS, Gregory, J.TONG, Roger, C.YEE, Peter, P.
    • H01J49/04
    • H01J49/165G01N30/7246G01N30/7266H01J49/049
    • An apparatus for efficiently removing a carrier liquid from charged liquid drops formed by electrospray ionization prior to introduction of the drops into a mass spectrometer (209). A central capillary tube (210) connects a region of the low pressure vacuum system containing the mass spectrometer (209) with a region at substantially atmospheric pressure, in which ion formation is produced by electrospray ionization. Heated, drying gas flows through a plurality of vortex forming channels (214) symmetrically disposed about the axis of the central capillary tube (210) which provides an entrance to the spectrometer (209). Gas exiting the vortex forming channels (214) enters tangentially to the inside of a vortex drying tube (222) with a small helix angle, causing the gas to swirl around the tube, forming a vortex. The vortex drying gas flows in a direction that is substantially transverse to the axis of the entrance capillary into the mass spectrometer (209). The vortex gas intersects the electrospray, separating undesired large drops from smaller drops by a vortex gas flow which imparts a centrifugal force to the drops. The largest drops are driven to the wall of the drying tube (222) and caused to fragment into smaller drops by evaporation and collision with the wall (222).
    • 97. 发明公开
    • Discharge ionization mass spectrometer
    • Entladungsionisation-Massenspektrometer。
    • EP0252758A2
    • 1988-01-13
    • EP87306137.8
    • 1987-07-10
    • FISONS plc
    • Bateman, Robert Harold, Dr.Jones, David Spencer, Dr.
    • H01J49/04H01J49/12
    • H01J49/049G01N30/726H01J49/0445H01J49/12
    • The invention provides a mass spectrometer (10) for the analysis of a sample dissolved in a fluid, and in particular a spectrometer for the analysis of high molecular weight compounds in the eluent of a liquid chromatograph.
      The fluid to be analyzed is at least partly vaporized and sprayed into the cathode dark space (45) of a glow discharge (46). Ions characteristic of the sample are extracted from the discharge and subsequently mass analyzed. Conveniently, spraying into the cathode dark space (45) is achieved by making the cathode electrode of the discharge comprise the spraying means (38) through which the fluid is sprayed. Little fragmentation of the high mass ions is caused by the process, and the invention extends the range of compounds which can be analyzed in comparison with similar prior art thermospray type mass spectrometers.
    • 本发明提供了用于分析溶解在流体中的样品的质谱仪(10),特别是用于分析液相色谱仪洗脱液中高分子量化合物的光谱仪。 要分析的流体至少部分蒸发并喷射到辉光放电(46)的阴极暗空间(45)中。 从放电中提取样品的离子特征,随后进行质量分析。 方便地,通过使排放物的阴极电极喷射流体喷射装置(38)来实现向阴极暗空间(45)的喷射。 通过该方法引起高质量离子的少量碎裂,并且与现有技术的热喷涂型质谱仪相比,本发明扩展了可分析的化合物的范围。