# Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2018, Vol. 29 ›› Issue (11): 162

• LOW ENERGY ACCELERATOR, RAY AND APPLICATIONS •

### A reinvestigation of low-molecular-weight components in SOA produced by cyclohexene ozonolysis

Jun Chen 1 • Zhao-Hui Li 1 • Ye-Peng Yu 1 • Xuan Lin 1 • Hang Zhang 1 • Yan-Bo Li 1 • Huan-Huan Wang 1 • Rui-Rui Sun 1 • Qing-Hui Meng 1 • Chao-Qun Huang 2 • Xiao-Bin Shan 1 • Fu-Yi Liu 1 • Chang-Jin Hu 3 • Wei-Jun Zhang 3,4 • Liu-Si Sheng 1

1. 1 National Synchrotron Radiation Laboratory, School of Nuclear Science and Technology, University of Science and Technology of China, Hefei 230029, China
2 Laboratory Medical Optical and Mass Spectrometry, Center of Medical Physics and Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, No. 350, Shushanhu Rd., Hefei 230031, China
3 Laboratory of Atmospheric Physico-Chemistry, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China
4 School of Environmental Science and Optoelectronic Technology, University of Science and Technology of China, Hefei 230026, China
• Contact: Chao-Qun Huang E-mail:cqhuang@aiofm.ac.cn
• Supported by:

This work was supported by the National Natural Science Foundation of China (Nos. 11575178, 91544105, U1532137, 91544228, and U1232130).

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Jun Chen, Zhao-Hui Li, Ye-Peng Yu, Xuan Lin, Hang Zhang, Yan-Bo Li, Huan-Huan Wang, Rui-Rui Sun, Qing-Hui Meng, Chao-Qun Huang, Xiao-Bin Shan, Fu-Yi Liu, Chang-Jin Hu, Wei-Jun Zhang, Liu-Si Sheng. A reinvestigation of low-molecular-weight components in SOA produced by cyclohexene ozonolysis.Nuclear Science and Techniques, 2018, 29(11): 162
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Abstract: The ozonolysis of cyclohexene is an important model system for understanding the more complex reaction of O3 with monoterpenes; however, many previous studies have come to qualitatively different conclusions about the composition of the secondary organic aerosol (SOA) formed in this system. In the present study, the composition of the SOA produced by cyclohexene ozonolysis in the absence of seed aerosols has been investigated online and off-line using synchrotron-based thermal desorption/tunable vacuum ultraviolet photoionization time-of-flight aerosol mass spectrometry (TD-VUV-TOF-PIAMS) in conjunction with a custom-built smog chamber. On the basis of the molecular ions observed by mass spectrometry at 11.5 eV, it was found that dicarboxylic acids, dialdehydes, and cyclic anhydrides are the predominant low molecular weight components in the particle phase. The results also indicated that TD-VUV-TOF-PIAMS coupled with filter sampling is a potentially useful tool for the investigation of SOA composition both in the field and in the laboratory.