Citation: WANG Tao, TANG Xiao-Feng, WEN Zuo-Ying, ZHANG Cui-Hong, ZHANG Wei-Jun. A Vacuum Ultraviolet Photoionization Time-of-Flight Mass Spectrometer for Investigation of Free Radical Reaction[J]. Chinese Journal of Analytical Chemistry, ;2020, 48(1): 28-33. doi: 10.19756/j.issn.0253-3820.191607 shu

A Vacuum Ultraviolet Photoionization Time-of-Flight Mass Spectrometer for Investigation of Free Radical Reaction

1.
Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, China;
2.
Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230026, China;
3.
School of Environmental Science and Optoelectronics Technology, University of Science and Technology of China, Hefei 230026, China

Received Date: 15 October 2019
Revised Date: 1 November 2019

Fund Project: This work was supported by the National Natural Science Foundation of China (Nos. 21773249, 91644109, 91544228) and the Chinese Academy of Sciences (No. 116134KSB20170048).

A home-made vacuum ultraviolet (VUV) photoionization time-of-flight mass spectrometer (VUVPI-TOFMS) was assembled to study atmospheric radical reactions. In the work, a commercial VUV discharge lamp with photon energy at 10.6 eV was installed as light source and a cage-shaped photoionization source was employed to efficiently extract and focus ions. With this spectrometer, a limit of detection (LOD) of 0.03 μg/L (S/N=3) for benzene detection was obtained. Then a microwave discharge flow tube was employed as reactor to produce free radicals and model their atmospheric reactions. The concentration of the methyl radical was measured with its self-reaction kinetics within the flow tube. As a representative example, the reaction of CH₃ and NO was investigated by VUVPI-TOFMS. Both the stable species and radicals involved in the reaction were probed and the reaction rate constant at room temperature and 300 Pa pressure was measured to be k(CH₃+NO)=1.2×10^-12 cm³/(molecule·s).
- Time-of-flight mass spectrometer,
- Vacuum ultraviolet photoionization,
- Flow tube,
- Free radical
1. [1]
2. [2]
3. [3]
4. [4]
5. [5]
6. [6]
7. [7]
8. [8]
9. [9]
10. [10]
11. [11]
12. [12]
13. [13]
14. [14]
15. [15]
16. [16]
17. [17]
18. [18]
19. [19]
20. [20]
21. [21]
22. [22]
23. [23]
24. [24]
25. [25]
26. [26]
27. [27]
28. [28]
1. [1]
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2. [2]
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沈阳化工大学材料科学与工程学院沈阳 110142