Assessing the Difference in the Effects of NO _x on the Photooxidation Mechanisms of Isomeric Compounds of α-Pinene and Î ³-Carene

Zhang, Zhaoyan1,2; Zang, Xiangyu1,3; Zhao, Yingqi1,2; Zhao, Ya1; Xie, Hua1,2; Li, Gang1,2; Jiang, Ling1,2,4; Yang, Xueming1,2,4,5,6

2024-07-01

10.1021/acsearthspacechem.4c00159

ACS EARTH AND SPACE CHEMISTRY   影响因子和分区

2472-3452

Elucidating the difference between the photooxidation mechanisms of isomeric volatile organic compounds (VOCs) by anthropogenic pollutants helps to unravel the structural dependence of VOCs on the formation of secondary organic aerosols (SOAs). Herein, the effects of NO (x) (NO and NO2) on the SOA formation from the photooxidation of isomeric monoterpenes of alpha-pinene and Delta(3)-carene were compared by a series of experimental and theoretical studies. For both the alpha-pinene and the Delta(3)-carene systems, the increase of NO and NO2 concentration ([NO] and [NO2]) first enhances and then suppresses the particle number concentration but enhances the particle size growth (except for the photooxidation of Delta(3)-carene with NO). The increase of [NO (x) ] first promotes and then suppresses the SOA yields of alpha-pinene. In particular, the increase of [NO] suppresses the SOA yields of Delta(3)-carene, whereas the increase of [NO2] promotes the SOA yields of Delta(3)-carene. These findings imply that the "rate effect" (a faster oxidation rate leads to a higher SOA yield) of photooxidation for Delta(3)-carene with NO2 may be more pronounced than that of alpha-pinene. The number of SOA components with higher O/C in the Delta(3)-carene system is larger than that in the alpha-pinene system, which could be rationalized that the bond tension of the three-membered ring structure of Delta(3)-carene is larger than that of the four-membered ring of alpha-pinene. The present findings serve as a model for clarifying the effects of NO (x) on the SOA formation of VOCs with the same chemical formula and stimulate systematic studies on a broad class of isomeric VOCs toward the improvement of SOA models.

secondary organic aerosol anthropogenic-biogenicinteractions photooxidation mechanism alpha-pinene Delta-carene

SCI

英语

其他

National Natural Science Foundation of China["22125303","92361302","92061203","22373102","22103082","22288201"] ; National Key Research and Development Program of China[2021YFA1400501] ; Innovation Program for Quantum Science and Technology[2021ZD0303304] ; Dalian Institute of Chemical Physics[DICP I202437] ; Chinese Academy of Sciences[GJJSTD20220001]

Chemistry ; Geochemistry & Geophysics

Chemistry, Multidisciplinary ; Geochemistry & Geophysics

WOS:001279800900001

AMER CHEMICAL SOC

Web of Science

1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Technol Ctr China Tobacco Henan Ind Ltd Co, Zhengzhou 450016, Peoples R China
4.Hefei Natl Lab, Hefei 230088, Peoples R China
5.Southern Univ Sci & Technol, Dept Chem, Shenzhen 518055, Peoples R China
6.Southern Univ Sci & Technol, Guangdong Prov Key Lab Catalyt Chem, Shenzhen 518055, Peoples R China

Zhang, Zhaoyan,Zang, Xiangyu,Zhao, Yingqi,et al. Assessing the Difference in the Effects of NO _x on the Photooxidation Mechanisms of Isomeric Compounds of α-Pinene and Î ³-Carene[J]. ACS EARTH AND SPACE CHEMISTRY,2024.

Zhang, Zhaoyan.,Zang, Xiangyu.,Zhao, Yingqi.,Zhao, Ya.,Xie, Hua.,...&Yang, Xueming.(2024).Assessing the Difference in the Effects of NO _x on the Photooxidation Mechanisms of Isomeric Compounds of α-Pinene and Î ³-Carene.ACS EARTH AND SPACE CHEMISTRY.

Zhang, Zhaoyan,et al."Assessing the Difference in the Effects of NO _x on the Photooxidation Mechanisms of Isomeric Compounds of α-Pinene and Î ³-Carene".ACS EARTH AND SPACE CHEMISTRY (2024).