| 摘要 |
PROBLEM TO BE SOLVED: To provide a high-sensitivity ion source that is swichable between atmospheric pressure chemical ionization source (APCI) and electrospray ion source (ESI), at a high speed. SOLUTION: A liquid chromatograph/mass spectrometer analyzer includes a separation means for respectively separating a plurality of mixed sample components from a solution; a sample spray section for spraying the solution solved from the separation means along with a gas, and implementing electrospray ionization of a portion of the sample; a needle electrode for implementing atmosphere pressure chemical ionization of a portion of the sprayed sample components; a sample inlet section for introducing ions generated by the needle electrode into vacuum; a mass analyzing section for implementing mass separation of the ions introduced by the sample inlet section; and a vaporization section for covering sample droplets sprayed by the sample spray section. The exit area of the vaporization section is smaller than the cross-sectional area of the vaporization section. The present invention obtains the high-sensitivity ion source for switching between APCI and ESI, at a high speed. COPYRIGHT: (C)2009,JPO&INPIT
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