Characterization of a new smog chamber for evaluating SAPRC gas-phase chemical mechanism

作     者：Kangwei Li Chao Lin Chunmei Geng Stephen White Linghong Chen Zhier Bao Xin Zhang Yanyun Zhao Lixia Han Wen Yang Merched Azzi Kangwei Li;Chao Lin;Chunmei Geng;Stephen White;Linghong Chen;Zhier Bao;Xin Zhang;Yanyun Zhao;Lixia Han;Wen Yang;Merched Azzi

作者机构：State Key Laboratory of Environmental Criteria and Risk AssessmentChinese Research Academy of Environmental SciencesBeijing 100012China State Key Laboratory of Clean Energy UtilizationZhejiang UniversityHangzhou 310027China CSIRO EnergyNorth RydeNSW 1670Australia New South Wales Department of PlanningIndustry and EnvironmentLidcombeNSW 1825Australia 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2020年第32卷第9期

页      面：14-22页

核心收录：

学科分类：07[理学] 070602[理学-大气物理学与大气环境] 0706[理学-大气科学] 

基　　金：supported by the Natural Science Founda-tion of China(No.51876190) the Environmental Protection Agency of Hangzhou(No.2017-008) the Innovative Research Groups of the National Natural Science Foundation of China(No.51621005) the program of Introducing Talents of Dis-cipline to University(No.B08026) 

主　　题：mechanism chemical CAPS 

摘      要：A new state-of-the-art indoor smog chamber facility(CAPS-ZJU) has been constructed and characterized at Zhejiang University,which is designed for chemical mechanism evaluation under well-controlled conditions.A series of characterization experiments were performed to validate the well-established experimental protocols,including temperature variation pattern,light spectrum and equivalent intensity(JNO2),injection and mixing performance,as well as gases and particle wall *** addition,based on some characterization experiments,the auxiliary wall mechanism has been setup and *** chamber experiments were performed across a broad range of experimental scenarios,and we demonstrated the ability to utilize these chamber data for evaluating SAPRC chemical *** was found that the SAPRC-11 can well predict the 03 formation and NO oxidation for almost all propene runs,with 6 hr △(O3-NO) model error of-3%±7%,while the final O3 was underestimated by-20% for isoprene *** for toluene and p-xylene experiments,it was confirmed that SAPRC-11 has significant improvement on aromatic chemistry than earlier version of SAPRC-07,although the aromatic decay rate was still underestimated to some *** model sensitivity test has been carried out,and the most sensitive parameters identified are the initial concentrations of reactants and the light intensity as well as HONO offgasing rate and 03 wall loss *** of which demonstrated that CAPS-ZJU smog chamber could derive high quality experimental data,and could provide insights on chamber studies and chemical mechanism development.