| 几种芳香烃的激光电离飞行时间质谱研究 |
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| 引用本文： | 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. |
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| 作者姓名： | 王雪峰 王志磷 秦启宗 李海洋 马晨生 白吉玲 |
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| 作者单位： | 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 |
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| 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。
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| 关 键 词： | 芳香烃 紫外激光电离 飞行时间质谱 |
| 收稿时间： | 1994-07-15 |
UV LASER DESORPTION/IONIZATION TIME-OF-FLIGHT MASS SPECTROMETRY OF AROMATIC MOLECULES |
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| 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. |
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| Authors: | WANGXUE-FENG WANG ZHI-LIN QIN QI-ZONG LI HAI-YANG MA CHEN-SHENG BAI JI-IING |
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| Institution: | 1. Laser Chemistry Institute, Fudan University, Shanghai 200433, P. R. China;2. Dalian Institute of Chemical Physics, Dalian 116023, P. R. China |
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| Abstract: | Time-of-flight mass spectrometry of several aromatic molecules were investigated in onestep UV laser desorption/ionization. Results show that benzoe]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. |
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| Keywords: | aromatic hydrocarbons UV laser ionization time-of-flight mass spectrometry |
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