The Impact of Vehicle Exhaust on PM2.5 Concentration in Cities in Northeast China

International Conference on Manufacturing Technology, Materials and Chemical Engineering

机械制造;材料科学;化学工业

Gong, Ying^1 ; Zhou, Xiaoshan^1

Shenyang Institute of Atmospheric Environment, China Meteorological Administration, China^1

关键词: Boundary layer heights;    Contribution rate;    Liaoning Province;    Northeast China;    Observation data;    Physical theory;    PM2.5 concentration;    Vehicle exhausts;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/392/4/042027/pdf
DOI  :  10.1088/1757-899X/392/4/042027

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

There has been considerable research in recent years on the contribution rate of vehicle motor exhaust to PM2.5 concentration (VCR-PM2.5). Nearly all of this research applied source appointment methods, which are highly complex and only can be executed by professionals. Based on analysis of hourly observations of PM2.5, SO4 2-, and NO3 - concentration and modeled hourly planet boundary layer height in Shenyang, a megacity in Northeast China, a simple statistical method was established to calculate the VCR-PM2.5. Based on this method, the average VCR-PM2.5 in winter 2015 of cities in Liaoning province was estimated, and the average VCR-PM2.5 of all these cities is about 23.29%. The result of this new method is a conservative estimation, the actual VCR-PM2.5 is likely to be slightly larger. This method is based on primary observation data and fundamental physical theory, and may thus be used to verify the results from source appointment or other methods.