Pollution Characteristics and Sources of Fine Particles During a Heavy Haze Episode in Winter: A Case Study of Weinan City

2019 3rd International Conference on Environmental and Energy Engineering

生态环境科学

Zhu, Y.^1 ; Cao, N.^1 ; Wei, Z.^1 ; Zhang, Y.J.^1

School of Environmental and Municipal Engineering, Xi'An University of Architecture and Technology, Xi'an, China^1

关键词: Aerosol mass spectrometry;    Biomass-burning;    Elemental carbon;    Industrial production;    Meteorological condition;    Positive Matrix Factorization;    Secondary pollution;    Single particle;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/281/1/012012/pdf
DOI  :  10.1088/1755-1315/281/1/012012

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Single Particle Aerosol Mass Spectrometry (SPAMS) is used to investigated a heavy haze process in Weinan,2017. Firstly, the fine particles (PM2.5) using ART-2a was analysed and clustered into 8 classes: organic carbon (OC), organics and elemental carbon combined particles (ECOC), elemental carbon (EC), heavy metal (HM), high molecular organic carbon (HOC), K-rich, levoglucosan (Lev) and dust. Secondly, positive matrix factorization (PMF) was used to identify the sources of PM2.5. Results from PMF showed that the main six sources of PM2.5 were coal-fired (38.48%), secondary (19.19%), biomass burning (15.04%), industry (9.28%), traffic (5.02%), and dust (5.00%). And it is obvious that the major cause of the atmospheric heavy haze is an unfavorable meteorological conditions such as high humidity and low wind speed, as well as coal-fired pollution and secondary pollution caused by heating and industrial production.