光学学报, 1997, 17 (12): 1638, 网络出版: 2006-10-31
甲胺分子共振增强多光子电离的波长依赖性
Wavelength Dependence of Resonance-Enhanced Multiphoton Ionization of Methylamine
甲胺 共振增强多光子电离 质谱 离子产额的波长依赖性 methylamine resonance-enhanced multiphoton ionizat mass spectrometry wavelength dependence of ion yields
摘要
使用激光多光子电离质谱技术,研究了甲胺分子在425~495 nm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。
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.
方黎, 张冰, 柳晓军, 郭文跃, 魏杰, 蔡继业. 甲胺分子共振增强多光子电离的波长依赖性[J]. 光学学报, 1997, 17(12): 1638. 方黎, 张冰, 柳晓军, 郭文跃, 魏杰, 蔡继业. Wavelength Dependence of Resonance-Enhanced Multiphoton Ionization of Methylamine[J]. Acta Optica Sinica, 1997, 17(12): 1638.