Net effect of air pollution controls on health risk in the Beijing-Tianjin-Hebei region during the 2022 winter Olympics and Paralympics  

作　　者：Changqing Lin Peter K.K.Louie Alexis K.H.Lau Jimmy C.H.Fung Zibing Yuan Minghui Tao Xuguo Zhang Md.Shakhaoat Hossain Chengcai Li Xiang Qian Lao 

机构地区：[1]Division of Environment and Sustainability,The Hong Kong University of Science and Technology,Hong Kong,China [2]Environmental Protection Department,Hong Kong Government SAR,Hong Kong,China [3]Department of Civil and Environmental Engineering,The Hong Kong University of Science and Technology,Hong Kong,China [4]Guangdong-Hongkong-Macao Joint Laboratory of Collaborative Innovation for Environmental Quality,The Hong Kong University of Science and Technology,Hong Kong,China [5]Department of Mathematics,The Hong Kong University of Science and Technology,Hong Kong,China [6]School of Environment and Energy,South China University of Technology,Guangzhou 510006,China [7]Hubei Key Laboratory of Critical Zone Evolution,School of Geography and Information Engineering,China University of Geosciences,Wuhan 430074,China [8]Department of Public Health and Informatics,Jahangirnagar University,Dhaka 1342,Bangladesh [9]Department of Atmospheric and Oceanic Sciences,School of Physics,Peking University,Beijing 100871,China [10]Jockey Club School of Public Health and Primary Care,The Chinese University of Hong Kong,Hong Kong,China

出　　处：《Journal of Environmental Sciences》2024年第1期560-569,共10页环境科学学报（英文版）

基　　金：supported by the NSFC/RGC Joint Research Project (Nos.42161160329 and N_HKUST609/21);the Research Grants Council of Hong Kong (Nos.GRF 16202120 and T24/504/17);the Special Fund Project for Science and Technology Innovation Strategy of Guangdong Province (No.2019B121205004)。

摘　　要：Due to the non-linearity in ozone(O_(3))formation,reducing the emission of nitrogen oxides(NO_(x))may increase O_(3) concentration.Given the counteractive O_(3) response to NO_(x) reduction,overall impact of air pollution controls can be ambiguous when the assessments focus on the changes in pollutant concentrations.In this study,a risk-based method was used to gauge the net effect of air pollution controls on mortality risk in the Beijing–Tianjin–Hebei(BTH)region during the 2022 Winter Olympics and Paralympics(WOP).This mega-event presents a unique opportunity to investigate the efficacy of deep cuts in pollutant emissions.Results show that O_(3) concentrations greatly increased as nitrogen dioxide(NO_(2))concentrations decreased in the BTH.Due to the active photochemical formations,O_(3) became the dominant pollutant that affected human health during the WOP.Despite the substantial O_(3) increases,the health benefits of NO_(2) reductions overwhelmed the adverse health effects of O_(3) increases in most regions of the BTH(at 81 out of 112 stations).After considering the impacts of particulate matter,the integrated health risk of air pollution mixtures declined almost everywhere in the BTH.Our results underscore the great necessity of changing the assessment paradigm of pollution control from using concentration-based methods to using risk-based methods.Together with the carbon neutrality policy,stringent control of NO_(x)emission from combustion sources is a promising way to achieve synergistic control solutions for air pollution and climate change.

关 键 词：OZONE Nitrogen dioxide Health risk Carbon neutrality MEGA-EVENTS 

分 类 号：X51[环境科学与工程—环境工程]