| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a sample ionization method which can be applied to an ionization device for a mass analyzer, which has excellent ionization efficiency and allows a minute amount of a sample to be analyzed with high sensitivity at atmospheric pressure and with which workload for maintenance of the mass analyzer can be reduced. <P>SOLUTION: In a sample ionization method, a sample to be mass analyzed is ionized by providing argon gas and water and applying ultraviolet rays to the sample at atmospheric pressure, thus oxonium ions (H<SB POS="POST">3</SB>O<SP POS="POST">+</SP>) are produced by reaction of excited argon gas with dimeric water (H<SB POS="POST">2</SB>O)<SB POS="POST">2</SB>. <P>COPYRIGHT: (C)2012,JPO&INPIT |
