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个人信息Personal Information
教授
博士生导师
硕士生导师
主要任职：Professor Dr. Hongbin Ding
其他任职：物理学院学术委员会主任，等离子体联合研究中心主任,中国光学工程学会LIBS专委会副主任, 中国核学会核聚变等离子体分会常务理事，辽宁省物理学会副理事长，国际ITER-ITPA 委员
性别：男
毕业院校：巴塞尔大学
学位：博士
所在单位：物理学院
学科：等离子体物理. 光学工程
联系方式：hding@dlut.edu.cn
电子邮箱：hding@dlut.edu.cn
Laser-Ionization TOF Mass Spectrometer Characterization of Benzene Destruction in Atmospheric Pressure Pulsed Discharge
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论文类型：期刊论文
发表时间：2009-04-01
发表刊物：PLASMA SCIENCE & TECHNOLOGY
收录刊物：SCIE、EI、CSCD、Scopus
卷号：11
期号：2
页面范围：171-176
ISSN号：1009-0630
关键字：laser-ionization; TOF mass spectrometer; benzene plasma; VOCs
摘要：Benzene is a major industrial air pollutant and can cause serious human health disorders. In this paper an investigation on benzene destruction, in an atmospheric-pressure fast-flow pulsed DC-discharge by means of laser ionization combined with time-of-flight (TOF) mass spectrometry, is reported. Most by-products including transient reactive species from the benzene discharge were characterized by molecular beam sampling combined with TOF mass spectrometry. It is showed that, with a gas mixture of 0.5% C(6)H(6) in Ar, benzene can be effectively destroyed by discharge plasma. The intermediate species consisted of small fragments of C(n)H(m) (n=3 similar to 5, m=1 similar to 11), cycle-chain species of C(n)H(m) (n=6 similar to 9, m=7 similar to 10) and polycyclic species C(n)H(m) (n >= 9, m=8 similar to 12). The alternation of mass peaks (intensity) with even/odd electrons was observed in the measured mass spectra. The results indicated that the alternation is mainly due to the different ionization potentials of the open shell and close shell species. Based on the examination of the features of the species' composition, the primary reaction pathways are proposed and discussed.