| Kinetic Understanding of the Ultrahigh Ionization Efficiencies (up to 28%) of Excited-State CH2Cl2-Induced Associative Ionization: A Case Study with Nitro Compounds | |
| Huang, Jingyun; Yang, Bo; Shu, Jinian; Zhang, Zuojian; Li, Zhen; Jiang, Kui | |
| 2019-05-07 | |
| Source Publication | ANALYTICAL CHEMISTRY
 |
| ISSN | 0003-2700 |
| Volume | 91Issue:9Pages:5605-5612 |
| Abstract | Excited-state CH2Cl2-induced associative ionization (AI) is a newly developed ionization method that is very effective for oxygenated organics. However, this method is not widely known. In this study, an unprecedented ionization efficiency and ultrafast reaction rate of AI toward nitro compounds were observed. The ionization efficiencies of o-nitrotoluene (o-NT), m-nitrotoluene (m-NT), and nitrobenzene (NB) were as high as (28 +/- 3)%, (27 +/- 2)%, and (13 +/- reaction rate coefficients of these nitroaromatics were (0.5-1.3) X 10(-7) molecule(-1) cm(3) s(-1) (similar to 300 K). These unusual rate coefficients indicated strong long-range interactions between the two neutral reactants, which was regarded as a key factor leading to the ultrahigh ionization efficiency. The detection sensitivities of the nitroaromatics, (1.01-2.16) X 10(4) counts pptv(-1) in 10 s acquisition time, were obtained by an AI time-of-flight mass spectrometer (AI-TOFMS). These experimental results not only provide new insight into the AI reaction but also reveal an excellent ionization method that can improve the detection sensitivity of nitroaromatics to an unprecedented degree. |
| Department | 大气环境科学实验室 |
| Document Type | 期刊论文 |
| Identifier | https://ir.rcees.ac.cn/handle/311016/43138 |
| Collection | 大气环境科学实验室 |
| Affiliation | 1.Univ Chinese Acad Sci, Natl Engn Lab VOCs Pollut Control Mat & Technol, Beijing 101408, Peoples R China 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Simulat & Pollut Control, Beijing 100085, Peoples R China |
| Recommended Citation GB/T 7714 | Huang, Jingyun,Yang, Bo,Shu, Jinian,et al. Kinetic Understanding of the Ultrahigh Ionization Efficiencies (up to 28%) of Excited-State CH2Cl2-Induced Associative Ionization: A Case Study with Nitro Compounds[J]. ANALYTICAL CHEMISTRY,2019,91(9):5605-5612. |
| APA | Huang, Jingyun,Yang, Bo,Shu, Jinian,Zhang, Zuojian,Li, Zhen,&Jiang, Kui.(2019).Kinetic Understanding of the Ultrahigh Ionization Efficiencies (up to 28%) of Excited-State CH2Cl2-Induced Associative Ionization: A Case Study with Nitro Compounds.ANALYTICAL CHEMISTRY,91(9),5605-5612. |
| MLA | Huang, Jingyun,et al."Kinetic Understanding of the Ultrahigh Ionization Efficiencies (up to 28%) of Excited-State CH2Cl2-Induced Associative Ionization: A Case Study with Nitro Compounds".ANALYTICAL CHEMISTRY 91.9(2019):5605-5612. |
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| Kinetic Understandin（714KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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