Impact of atmospheric O_(3)and NO_(2)on the secondary sulfates in real atmosphere  

作　　者：Kai Shi Xiaoli Mei Chih-rung Chen Chunqiong Liu 

机构地区：[1]College of Environmental Sciences and Engineering,China West Normal University,Nanchong 637009,China [2]Key Laboratory of Nanchong City of Ecological Environment Protection and Pollution Prevention in Jialing River Basin,China West Normal University,Nanchong 637009,China

出　　处：《Journal of Environmental Sciences》2025年第4期277-287,共11页环境科学学报(英文版)

基　　金：supported by the National Natural Science Foundation of China(No.52160024);the Natural Science Foundation of Hunan Province,China(No.2022JJ30475);the Innovation Team Funds of China West Normal University(No.KCXTD2023-4);the Natural Science Foundation of Sichuan,China(No.24NSFSC0537);the Fundamental Research Funds of China West Normal University(Nos.22kE015 and 22kE016).

摘　　要：As an important component of secondary aerosols,sulfate plays a crucial role in regulating atmospheric radiative balance and influencing the secondary formation of ozone(O_(3)).In real atmosphere,atmospheric oxidants NO_(2)and O_(3)can promote the oxidation of SO_(2)to form sulfate(SO_(4)^(2−))through multiphase chemistry that occur at different time scales.Due to the combined impact of meteorology,pollution sources,atmospheric chemistry,etc.,time-scale dependence of SO_(2)-SO_(4)^(2−)conversion makes the impact of NO_(2)/O_(3)on it more complex.In this study,based on long-term time series(2013-2020)of air pollution variables from seven stations in Hong Kong,the Multifractal Detrended Cross-Correlation Analysis(MFDCCA)method has been employed to quantify the cross-correlations between SO_(2)and SO_(4)^(2−)in real atmosphere at different time scales,for examining the time-scale dependence of SO_(2)-SO_(4)^(2−)conversion efficiency.Furthermore,the Pearson correlation analysis has been used to study the influence of NO_(2)/O_(3)on SO_(2)-SO_(4)^(2−)conversion,and the regional and seasonal differences have been analyzed by considering factors such as meteorology,pollution sources,and regional transport.Changes in the main components of secondary aerosols are closely linked with the co-control of regional PM_(2.5)and O_(3).Therefore,the exploration of the impact of co-existing NO_(2)/O_(3)gases on the secondary formation of sulfates in real atmosphere is significant.

关 键 词：SULFATE Nitrogen dioxide OZONE Multifractal detrended cross-correlation analysis Hong Kong 

分 类 号：X51[环境科学与工程—环境工程]