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Parameterization of heterogeneous reaction of SO2 to sulfate on dust with coexistence of NH3 and NO2 under different humidity conditions
Zhang, Shuping; Xing, Jia; Sarwar, Golam; Ge, Yanli; He, Hong; Duan, Fengkui; Zhao, Yan; He, Kebin; Zhu, Lidan; Chu, Biwu
2019-07-01
Source PublicationATMOSPHERIC ENVIRONMENT
ISSN1352-2310
Volume208Pages:133-140
AbstractSulfate plays an important role in atmospheric haze in China, which has received considerable attention in recent years. Various types of parameterization methods and heterogeneous oxidation rates of SO2 have been used in previous studies. However, properly representing heterogeneous sulfate formation in air quality models remains a big challenge. In this study, we quantified the heterogeneous oxidation reaction using experimental results that approximate the haze conditions in China. Firstly, a series of experiments were conducted to investigate the heterogeneous uptake of SO2 with different relative humidity (RH) levels and the presence of NH3 and NO2 on natural dust surfaces. Then the uptake coefficients for heterogeneous oxidation of SO2 to sulfate at different RH under NH3 and NO2 coexistence were parameterized based on the experimental results and implemented in the Community Multiscale Air Quality modeling system (CMAQ). Simulation results suggested that this new parameterization improved model performance by 6.6% in the simulation of wintertime sulfate concentrations for Beijing. The simulated maximum growth rate of SO42- during a heavy pollution period increased from 0.97 mu g m(-3) h(-1) to 10.11 mu g m(-3) h(-1). The heterogeneous oxidation of SO2 in the presence of NH3 contributed up to 23% of the sulfate concentration during heavy pollution periods.
Department水污染控制实验室
KeywordSulfate Heterogeneous chemistry SO2 NH3 Parameterization
Document Type期刊论文
Identifierhttp://ir.rcees.ac.cn/handle/311016/43268
Collection水污染控制实验室
Affiliation1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100085, Peoples R China
2.Tsinghua Univ, State Key Joint Lab Environm Simulat & Pollut Con, Sch Environm, Beijing 100084, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.US EPA, Natl Exposure Res Lab, 109 TW Alexander Dr, Res Triangle Pk, NC 27711 USA
5.Chinese Acad Sci, Ctr Excellence Reg Atmospher Environm, Inst Urban Environm, Xiamen 361021, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Shuping,Xing, Jia,Sarwar, Golam,et al. Parameterization of heterogeneous reaction of SO2 to sulfate on dust with coexistence of NH3 and NO2 under different humidity conditions[J]. ATMOSPHERIC ENVIRONMENT,2019,208:133-140.
APA Zhang, Shuping.,Xing, Jia.,Sarwar, Golam.,Ge, Yanli.,He, Hong.,...&Chu, Biwu.(2019).Parameterization of heterogeneous reaction of SO2 to sulfate on dust with coexistence of NH3 and NO2 under different humidity conditions.ATMOSPHERIC ENVIRONMENT,208,133-140.
MLA Zhang, Shuping,et al."Parameterization of heterogeneous reaction of SO2 to sulfate on dust with coexistence of NH3 and NO2 under different humidity conditions".ATMOSPHERIC ENVIRONMENT 208(2019):133-140.
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