公开(公告)号：US5481107A

公开(公告)日：1996-01-02

申请号：US302555

申请日：1994-09-08

申请人： Yasuaki Takada ,  Minoru Sakairi ,  Atsumu Hirabayashi ,  Youichi Ose

发明人： Yasuaki Takada ,  Minoru Sakairi ,  Atsumu Hirabayashi ,  Youichi Ose

IPC分类号： G01N27/62 ,  G01N30/72 ,  H01J49/04 ,  H01J49/06 ,  H01J49/22 ,  H01J49/40 ,  H01J49/42

CPC分类号： H01J49/044 ,  G01N30/728 ,  H01J49/061 ,  G01N30/7266 ,  G01N30/7293

摘要： A mass spectrometer comprising an ionization region for ionizing a sample under atmospheric pressure, an ion sampling aperture for introducing ions generated by the ionization region into a vacuum, and a mass analysis region for mass analyzing the ions on the basis of a high-frequency electric field, wherein: an electrostatic lens for deflecting the direction of the movement of the ion from the center axis of the ion sampling aperture is disposed between the ionization region and the mass analysis region; the center axis of an aperture for introducing ions into the mass analysis region and the center axis of the ion sampling aperture are disposed so as to be shifted in parallel from each other; and the center axis of the ion sampling aperture and the center axis of a cylindrical inner electrode constituting the electrostatic lens are disposed so as to be shifted in parallel from each other to thereby prevent charged droplets or droplets without charge from flowing into the mass analysis region.

摘要翻译： 一种质谱仪，其特征在于，包括用于在大气压下使样品离子化的电离区域，用于将由离子化区域产生的离子引入真空的离子取样孔，以及质量分析区域，用于基于高频电力 其特征在于，在所述电离区域和所述质量分析区域之间配置用于使所述离子从所述离子取样孔的中心轴线移动的方向偏转的静电透镜; 用于将离子引入质量分析区域和离子采样孔的中心轴的孔的中心轴线彼此平行地移位; 并且离子采样孔的中心轴线和构成静电透镜的圆柱形内部电极的中心轴线彼此平行地移位，从而防止带电液滴或液滴而不带电流入质量分析区域 。