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| 单光子/光电子在线质谱实时分析聚氯乙烯热分解/燃烧产物 | |
| 引用本文： | 陈文东,侯可勇,陈平,李芳龙,赵无垛,崔华鹏,花磊,谢园园,李海洋. 单光子/光电子在线质谱实时分析聚氯乙烯热分解/燃烧产物[J]. 环境科学, 2013, 34(1): 34-38 |
| 作者姓名： | 陈文东 侯可勇 陈平 李芳龙 赵无垛 崔华鹏 花磊 谢园园 李海洋 |
| 作者单位： | 1. 中国科学院大连化学物理研究所,大连 116023;中国科学院大学,北京 100049 2. 中国科学院大连化学物理研究所,大连,116023 3. 浙江理工大学化学系,杭州,310018 |
| 基金项目： | 国家高技术研究发展计划(863)项目(2011AA060602); 国家自然科学基金项目(20907052) |
| 摘 要： | 实验室研制了低能光电子磁场增强电离(MEPEI)和单光子电离(SPI)复合电离源,该电离源具有电离化合物范围宽、碎片离子少、质谱图简单等优点,结合飞行时间质谱(TOF-MS)实现了聚氯乙烯(PVC)热分解/燃烧产物的在线分析.针对不同的目标化合物,MEPEI/SPI复合电离源通过调节电离区电场强度,可以快速在SPI和SPI-MEPEI之间切换.PVC热分解/燃烧产物中电离能大于光子能量(10.60 eV)的HCl和CO2(12.74 eV、13.77 eV)利用MEPEI模式电离;而烯烃、二氯乙烯、苯系物、氯苯、苯乙烯、茚满及萘系物等可通过SPI-MEPEI复合模式电离.通过实时监测PVC主要燃烧产物的信号强度随温度的变化趋势可推断出,PVC燃烧产物主要是通过两种机制生成:①250～370℃时,PVC发生脱氯及分子内环化反应,产生大量的HCl、苯和萘;②380～510℃时,PVC发生分子间交联反应,生成烷基芳烃,如甲苯和二甲苯/乙苯等.实验结果表明,SPI/SPI-MEPEI复合离子源TOF-MS分析速度快,应用范围广,在在线分析中具有广泛的应用前景. |
| 关 键 词： | 单光子电离 光电子电离 复合电离源 飞行时间质谱 在线分析 热分解/燃烧产物 |
| 收稿时间： | 2012-03-10 |
| 修稿时间： | 2012-05-02 |
Real-Time Analysis of Polyvinyl Chloride Thermal Decomposition/Combustion Products with Single Photon Ionization/Photoelectron Ionization Online Mass Spectrometer |
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| CHEN Wen-dong,HOU Ke-yong,CHEN Ping,LI Fang-long,ZHAO Wu-duo,CUI Hua-peng,HUA Lei,XIE Yuan-yuan and LI Hai-yang. Real-Time Analysis of Polyvinyl Chloride Thermal Decomposition/Combustion Products with Single Photon Ionization/Photoelectron Ionization Online Mass Spectrometer[J]. Chinese Journal of Environmental Science, 2013, 34(1): 34-38 | |
| Authors: | CHEN Wen-dong HOU Ke-yong CHEN Ping LI Fang-long ZHAO Wu-duo CUI Hua-peng HUA Lei XIE Yuan-yuan LI Hai-yang |
| Affiliation: | Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China;University of Chinese Academy of Sciences, Beijing 100049, China;Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China;Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China;University of Chinese Academy of Sciences, Beijing 100049, China;Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, China;Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China;University of Chinese Academy of Sciences, Beijing 100049, China;Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China;University of Chinese Academy of Sciences, Beijing 100049, China;Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China;University of Chinese Academy of Sciences, Beijing 100049, China;Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China;University of Chinese Academy of Sciences, Beijing 100049, China;Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China |
| Abstract: | |
| Keywords: | single photon ionization photoelectron ionization combined ion source time-of-flight mass spectrometer online analysis thermal decomposition/combustion products |
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