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    • 1. 发明授权
    • Subatmospheric, variable pressure sample delivery chamber for
electrospray ionization/mass spectrometry and other applications
    • 低气压,可变压力样品输送室,用于电喷雾离子化/质谱和其他应用
    • US6068749A
    • 2000-05-30
    • US784400
    • 1997-01-17
    • Barry L. KargerFrantisek ForetDaniel P. Kirby
    • Barry L. KargerFrantisek ForetDaniel P. Kirby
    • G01N27/447G01N30/28G01N30/72H01J49/04G01N27/26
    • H01J49/045G01N27/44717H01J49/165G01N2030/285G01N30/7266
    • A subatmospheric, variable pressure sample delivery chamber, useful as an electrospray ionization device for introducing a sample into a mass spectrometer or as a sample delivery device for delivery of a sample to a collection device at subatmospheric pressures, is disclosed. The sample delivery chamber is configured to maintain an operating pressure between 1 and 750 Torr, preferably between 50 and 700 Torr. The chamber has an inlet port for introduction of a gas and an exit port capable of being coupled either to a sampling orifice for an analytical device, usually a mass spectrometer, or directly to a pump for removal of gas. A sample delivery device extends from outside the chamber into the interior of the chamber. The inlet end of the sample delivery device is capable of receiving a sample and the exit end of the sample delivery device is aligned with the exit port of the chamber, if the sample is to be delivered to an external analytical device, or aligned with the collection device, for direct collection of the sample.
    • 公开了一种低于大气压的可变压力样品输送室,其用作将样品引入质谱仪或用于将样品递送至低于大气压的收集装置的样品输送装置的电喷射离子化装置。 样品输送室被配置为将操作压力保持在1至750托之间,优选在50至700托之间。 腔室具有用于引入气体和出口的入口端口,该出口能够耦合到用于分析装置(通常是质谱仪)的采样孔,或者直接连接到用于去除气体的泵。 样品输送装置从腔室外部延伸到腔室的内部。 样品输送装置的入口端能够接收样品,并且样品输送装置的出口端与腔室的出口对准,如果样品要被输送到外部分析装置,或者与 收集装置,用于直接收集样品。