IntroductionEducationWork ExperienceSocial PositionSocial ActivitiesResearch1. Atmospheric chemistry and environmental effects of reactive halogens Reactive halogens (such as Cl2 and chlorine radicals) are a new class of atmospheric pollutants, which will undergo complex photochemical reactions and surface/interface reactions in the atmosphere, which have a significant impact on the degradation of primary pollutants and the generation of secondary pollutants. 2. Oxidative degradation of VOCs and its impact on the formation of secondary pollutants VOCs in the ambient atmosphere will be oxidized and degraded by free radicals (such as OH free radicals and chlorine free radicals) to form intermediate oxidation products with different volatile intervals, such as IVOCs, SVOCs, LVOCs and ELVOCs, etc., and the oxidation intermediate products will generate secondary organic aerosols through the process of gas particle partitioning and condensation, and at the same time, the formation of ozone will be promoted in the presence of NOx. Combined with multi-source mass spectrometry, field observation, laboratory (smoke box or flow tube) and model simulation, the oxidative degradation kinetics and oxidation product distribution of multi-source VOCs were explored, and the contribution of oxidative degradation of VOCs to ozone and secondary organic aerosol generation was further clarified, which is conducive to understanding the generation mechanism of atmospheric compound pollution. 3. Application of multi-source mass spectrometry in ambient According to the selectivity of different ion sources to the characteristics of organic molecules, combined with a variety of ion sources (H2O, CH3I, HNO3, CH2Br2 and NH3H2O, etc.) mass spectrometers to explore the pollution characteristics, sources and generation pathways of different volatile organic molecules in the urban atmosphere, a database of the full volatile interval of organic molecules was established, and its contribution to the generation of new particles and secondary organic aerosols was explored. TeachingPostgraduatesFundingVertical ProjectHorizontal ProjectPublications1)Wei Ma, Yongchun Liu*, Yusheng Zhang, Zemin Feng, Junlei Zhan, Chenjie Hua, Li Ma, Yishuo Guo, Ying Zhang, Wenshuo Zhou, Chao Yan, Biwu Chu, Tianzeng Chen, Qingxin Ma, Chunshan Liu, Markku Kulmala, Yujing Mu, and Hong He, A New Type of Quartz Smog Chamber: Design and Characterization. Environ. Sci. Technol., 2022, 56, 4, 2181–2190. 2)Wei Ma, Zemin Feng, Junlei Zhan, Yongchun Liu*, Pengfei Liu, Chengtang Liu, Qingxin Ma, Kang Yang, Yafei Wang, Hong He, Markku Kulmala, Yujing Mu, Junfeng Liu*, Influence of photochemical loss of volatile organic compounds on understanding ozone formation mechanism. Atmos. Chem. Phys., 2022, 22, 4841–4851. 3)Wei Ma, Feixue Zheng, Yusheng Zhang, Xin Chen, Junlei Zhan, Chenjie Hua, Boying Song, Zongcheng Wang, Jiali Xie, Chao Yan, Markku Kulmala, and Yongchun Liu*, Weakened Gas-to-Particle Partitioning of Oxygenated Organic Molecules in Liquified Aerosol Particles. Environ. Sci. Technol. Lett., 2022, 9, 10, 837-843. 4)Wei Ma, Xin Chen, Men Xia, Yafei Liu, Yuzheng Wang, Yusheng Zhang, Feixue Zheng, Junlei Zhan, Chenjie Hua, Zongcheng Wang, Wei Wang, Peng Fu, Markku Kulmala, and Yongchun Liu*, Reactive Chlorine Species Advancing the Atmospheric Oxidation Capacities of Inland Urban Environments. Environ. Sci. Technol., 2023, 57, 4, 14638–14647. 5)Junlei Zhan, Wei Ma, Boying Song, Zongcheng Wang, Xiaolei Bao*, Hong-Bin Xie, Biwu Chu, Hong He, Tao Jiang, Yongchun Liu*. The contribution of industrial emissions to ozone pollution: Identified using ozone formation path tracing approach. npj Clim. Atmos. Sci., 2023, 6: 37. 6)Yafei Liu, Wei Ma, Shijie Yin, Chenlu Li, Kai Xu, Chen Zhang, Wenjie Zhang, Zhigang Xue, Yele Sun, Dongsheng Ji, Jie Li, Jing Chen, Hezhong Tian, Xingang Liu*. Quantification of enhanced VOC emissions from fireworks. Environ. Pollut., 2022, 120389. 7)Shijie Yin, Yafei Liu*, Wei Ma, Chen Zheng, Yujun Zhang, Zheng Wang, Qiang Cheng, Xingang Liu*. Formation Mechanism, Precursor sensitivity and control strategies of summertime ozone on the Fenwei Plain, China. Atmos. Environ., 2023, 309, 119908. 8)Junlei Zhan, Yongchun Liu*, Wei Ma, Zhenhai Wu, Hong Li*. Ozone formation sensitivity study using machine learning coupled with reactivity of volatile organic compound species. Atmos. Meas. Tech., 2022, 15, 1511-1520. 9)Yafei Liu, Peipei Qiu, Chenlu Li, Xueke Li, Wei Ma, Shijie Yin, Qing Yu, Jifeng Li, Xingang Liu*. Evolution and variations of atmospheric VOCs and O3 photochemistry during a summer O3 event in a county-level city, Southern China. Atmos. Environ., 2022, 118942. AwardsPatentHonor RewardAdmissions Information |