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Electron Attachment Studies for CHCl3 Using Ion Mobility Spectrometry
Hai-yan Han*,Hong-tao Feng,Hu Li,Hong-mei Wang,Hai-he Jiang,Yan-nan Chu
Author NameAffiliationE-mail
Hai-yan Han* Laboratory of Environmental Spectroscopy, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China; College of Science, Hebei University of Engineering, Handan 060530, China hanhy0226@163.com 
Hong-tao Feng Laboratory of Environmental Spectroscopy, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China  
Hu Li Laboratory of Environmental Spectroscopy, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China  
Hong-mei Wang Laboratory of Environmental Spectroscopy, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China  
Hai-he Jiang Laboratory of Environmental Spectroscopy, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China  
Yan-nan Chu Laboratory of Environmental Spectroscopy, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China  
Abstract:
The dissociative electron attachment process for CHCl3 at different electric field have been studied with nitrogen as drift and carrier gas using corona discharge ionization source ion mobility spectrometry (CD-IMS). The corresponding electron attachment rate constants varied from 1.26×10-8 cm3/(molecules s) to 8.24×10-9 cm3/(molecules s) as the electric field changed from 200 V/cm to 500 V/cm. At a fixed electric field in the drift region, the attachment rate constants are also detected at different sample concentration. The ion-molecule reaction rate constants for the further reaction between Cl- and CHCl3 are also detected, which indicates that the technique maybe becomes a new method to research the rate constants between ions and neural molecules. And the reaction rate constants between Cl- and CHCl3 are the first time detected using CD-IMS.
Key words:  Ion mobility spectrometry, Dissociative electron attachment, Ion-molecule reaction rate constant, Chloroform
FundProject:
CHCl3电子吸附速率常数的离子迁移谱
韩海燕*,冯鸿涛,李虎,王鸿梅,江海河,储焰南
摘要:
利用电晕放电离子迁移谱, 使用高纯氮气作为载气和迁移气体, 研究了电场强度在200~500 V/cm变化时CHCl3的解离电子吸附速率常数, 得到样品所对应的电子吸附速率常数为1.26×10-8~8.24×10-9 cm3/(molecules s).利用该装置测量了固定电场下,样品的电子吸附速率常数与样品浓度之间的关系.此外利用所获得的离子迁移谱图得到了不同电场强度下Cl-与CHCl3之间的离子分子反应速率常数.
关键词:  离子迁移谱,解离电子吸附,离子分子反应,三氯甲烷
DOI:10.1088/1674-0068/24/02/218-224
分类号: