【摘要】 使用激光多光子电离质谱技术，研究了甲胺分子在４２５ｎｍ～４９５ｎｍ波长范围内共振增强多光子电离碎裂（ＲＥＭＰＩＦ）过程，记录了母体离子和与碎片离子产额与波长的依赖关系。由于共振增强多光子电离（ＲＥＭＰＩ）母体离子谱与碎片离子谱的相似性，可用探测总离子信号的方法来替代单独的母离子探测，有效地提高痕量探测的灵敏度。更多还原

【Abstract】 Laser ionization mass spectrometry is used to study the wavelength dependence of resonance-enhanced multiphoton ionization (REMPI) of methylamine, and both the parent and fragment ion yields are recorded in the wavelength range of 425￣495 nm. Similarities in the REMPI spectra of all the ions could lead to greater trace detection sensitivity if the total ion yield is concerned instead of only the parent ions.更多还原