Effect of industrial alkene ozonolysis on atmospheric H_(2)SO_(4)formation  

作　　者：Xing Wang Xiaowen Shi Youling Jiang Yan Ma Jun Zheng 

机构地区：[1]School of Environmental Science and Engineering,Nanjing University of Information Science and Technology,Nanjing 210044,China [2]Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control,Nanjing 210044,China [3]Jiangsu Provincial Academy of Environmental Sciences,Nanjing 210036,China

出　　处：《Journal of Environmental Sciences》2025年第4期466-476,共11页环境科学学报(英文版)

基　　金：supported by the National Natural Science Foundation of China(Nos.41975172,42275116,and 41730106).

摘　　要：This study has employed the master chemical mechanism(MCM)to investigate the influence of the ozone oxidation pathways in the atmospheric formation of H_(2)SO_(4)from shortchain olefins in industrialized areas.In-situ H_(2)SO_(4)formation data were obtained using a high-resolution chemical ionization time-of-flight mass spectrometer,and the simulated H_(2)SO_(4)concentrations calculated using updated parameters for the MCM model exhibited good agreementwith observations.In the simulation analysis of different reaction pathways involved in H_(2)SO_(4)formation,hydroxyl radicals were found to dominate H_(2)SO_(4)production during the daytime,while olefin ozone oxidation contributed up to 65%of total H_(2)SO_(4)production during the night-time.A sensitivity analysis of the H_(2)SO_(4)production parameters has revealed a high sensitivity to changes in sulfur dioxide,and a relatively high sensitivity to olefins with fast ozonolysis reaction rates and bimolecular reaction rates of resulting stabilized Criegee Intermediates.A high relative humidity promotes daytime H_(2)SO_(4)formation,but has an inhibiting effect during the night-time due to the different dominant reaction pathways.

关 键 词：Gaseous sulfuric acid Alkene ozonation reaction MCM model Sensitivity analysis 

分 类 号：X51[环境科学与工程—环境工程]