Comprehensive Assessment for the Impacts of S/1V0C Emissions from Mobile Sources on SOA Formation in China

Junchao Zhao; Zhaofeng Lv; Lijuan Qi

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Comprehensive Assessment for the Impacts of S/1V0C Emissions from Mobile Sources on SOA Formation in China

机译：Comprehensive Assessment for the Impacts of S/1V0C Emissions from Mobile Sources on SOA Formation in China

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Semivolatile/intermediate-volatility organic compounds(S/IVOCs)from mobile sources are essential SOA contributors.However,few studies have comprehensively evaluated the SOA contributions of S/IVOCs by simultaneously comparing different parameterization schemes.This study used three SOA schemes in the CMAQ model with a measurement-based emission inventory to quantify the mobile source S/IVOC-induced SOA(MS-SI-SOA)for 2018 in China.Among diiferent SOA schemes,SOA predicted by the 2D-VBS scheme was in the best agreement with observations,but there were still large deviations in a few regions.Three SOA schemes showed the peak value of annual average MS-SI-SOA was up to 0.6 ± 0.3 μfg/m~3.High concentrations of MS-SI-SOA were detected in autumn,while the notable relative contribution of MS-SI-SOA to total SOA was predicted in the coastal areas in summer,with a regional average contribution up to 20 ± 10 in Shanghai.MS-SI-SOA concentrations varied by up to 2 times among three SOA schemes,mainly due to the discrepancy in SOA precursor emissions and chemical reactions,suggesting that the differences between SOA schemes should also be considered in modeling studies.These findings identify the hotspot areas and periods for MS-SI-SOA,highlighting the importance of S/TVOC emission control in the future upgrading of emission standards.

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《Environmental Science & Technology: ES&T》 |2022年第23期|16695-16706|共12页
作者
Junchao Zhao; Zhaofeng Lv; Lijuan Qi;
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作者单位

State Key Laboratory of Plateau Ecology and Agriculture,College of Eco-environmental Engineering Qinghai University,Xining 810016,China;

State Key Joint Laboratory of ESPC,State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex,International Joint Laboratory on Low Carbon Clean Energy Innovation,School of Environment,Tsinghua University,Beijing 100084,;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
原文格式 PDF
正文语种英语
中图分类环境科学、安全科学;
关键词
mobile sources; S/IVOCs; SOA formation; SOA schemes; numerical model;

Comprehensive Assessment for the Impacts of S/1V0C Emissions from Mobile Sources on SOA Formation in China

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