几种芳香烃的激光电离飞行时间质谱研究

doi:10.7517/j.issn.1674-0475.1995.02.117

影像科学与光化学 ›› 1995, Vol. 13 ›› Issue (2): 117-121.DOI: 10.7517/j.issn.1674-0475.1995.02.117

几种芳香烃的激光电离飞行时间质谱研究

王雪峰¹, 王志磷¹, 秦启宗¹, 李海洋², 马晨生², 白吉玲²

1. 复旦大学激光化学研究所, 上海200433;
2. 大连化学物理研究所, 大连116023

收稿日期:1994-07-15 修回日期:1994-10-19 出版日期:1995-05-20 发布日期:1995-05-20
通讯作者: 王雪峰
基金资助:
国家自然科学基金

UV LASER DESORPTION/IONIZATION TIME-OF-FLIGHT MASS SPECTROMETRY OF AROMATIC MOLECULES

WANGXUE-FENG¹, WANG ZHI-LIN¹, QIN QI-ZONG¹, LI HAI-YANG², MA CHEN-SHENG², BAI JI-IING²

1. Laser Chemistry Institute, Fudan University, Shanghai 200433, P. R. China;
2. Dalian Institute of Chemical Physics, Dalian 116023, P. R. China

Received:1994-07-15 Revised:1994-10-19 Online:1995-05-20 Published:1995-05-20

摘要/Abstract

摘要： 利用一步紫外激光脱附和电离的飞行时间质谱法,测定了几种芳香烃分子:苯并[e]芘、荧蒽、肉桂酸和2,5-二羟基苯甲酸的质谱。实验结果发现,苯并[e]芘发生有效的“软”电离,属于双光子电离过程。而荧蒽需吸收三个光子才能电离。对2,5-二羟基苯甲酸和肉桂酸,在紫外脉冲激发作用下除了自身电离外,还发生了分子离子反应。

关键词: 芳香烃, 紫外激光电离, 飞行时间质谱

Abstract: Time-of-flight mass spectrometry of several aromatic molecules were investigated in onestep UV laser desorption/ionization. Results show that benzo[e]pyrene is softly-ionized byresonant two-photo ionization, and that fluoranthene is ionized via three-photo ionization.2,5-dihydrobenzic acid and cinnamic acid can also be ionized by pulsed UV laser and molecule-ion reactions occured during desorption and ionization processes.

Key words: aromatic hydrocarbons, UV laser ionization, time-of-flight mass spectrometry

王雪峰, 王志磷, 秦启宗, 李海洋, 马晨生, 白吉玲. 几种芳香烃的激光电离飞行时间质谱研究[J]. 影像科学与光化学, 1995, 13(2): 117-121.

WANGXUE-FENG, WANG ZHI-LIN, QIN QI-ZONG, LI HAI-YANG, MA CHEN-SHENG, BAI JI-IING. UV LASER DESORPTION/IONIZATION TIME-OF-FLIGHT MASS SPECTROMETRY OF AROMATIC MOLECULES[J]. Imaging Science and Photochemistry, 1995, 13(2): 117-121.

几种芳香烃的激光电离飞行时间质谱研究

UV LASER DESORPTION/IONIZATION TIME-OF-FLIGHT MASS SPECTROMETRY OF AROMATIC MOLECULES

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