CAS OpenIR  > 中科院上海应用物理研究所2011-2019年
Identification of the typical metal particles among haze, fog, and clear episodes in the Beijing atmosphere
Hu, YJ; Lin, J; Zhang, SQ; Kong, LD; Fu, HB; Chen, JM
2015
Source PublicationSCIENCE OF THE TOTAL ENVIRONMENT
Volume511Pages:369—380
Subtype期刊文献
AbstractFor a better understanding of metal particle morphology and behaviors in China, atmospheric aerosols were sampled in the summer of 2012 in Beijing. The single-particle analysis shows various metal-bearing speciations, dominated by oxides, sulfates and nitrates. A large fraction of particles is soluble. Sources of Fe-bearing particles are mainly steel industries and oil fuel combustion, whereas Zn- and Pb-bearing particles are primarily contributed by waste incineration, besides industrial combustion. Other trace metal particles play a minor rule, and may come from diverse origins. Mineral dust and anthropogenic source like vehicles and construction activities are of less importance to metal-rich particles. Statistics of 1173 analyzed particles show that Fe-rich particles (48.5%) dominate the metal particles, followed by Zn-rich particles (34.9%) and Pb-rich particles (15.6%). Compared with the abundances among clear, haze and fog conditions, a severe metal pollution is identified in haze and fog episodes. Particle composition and elemental correlation suggest that the haze episodes are affected by the biomass burning in the southern regions, and the fog episodes by the local emission with manifold particle speciation. Our results show the heterogeneous reaction accelerated in the fog and haze episodes indicated by more zinc nitrate or zinc sulfate instead of zinc oxide or carbonate. Such information is useful in improving our knowledge of fine airborne metal particles on their morphology, speciation, and solubility, all of which will help the government introduce certain control to alleviate metal pollution. (C) 2014 Elsevier B.V. All rights reserved.
KeywordTransmission Electron-microscopy Airborne Particulate Matter Heavy-metals Trace-metals Fly-ash Chemical-composition Oxidative Stress Coal Combustion Power-station Urban Aerosol
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/24473
Collection中科院上海应用物理研究所2011-2019年
Recommended Citation
GB/T 7714
Hu, YJ,Lin, J,Zhang, SQ,et al. Identification of the typical metal particles among haze, fog, and clear episodes in the Beijing atmosphere[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2015,511:369—380.
APA Hu, YJ,Lin, J,Zhang, SQ,Kong, LD,Fu, HB,&Chen, JM.(2015).Identification of the typical metal particles among haze, fog, and clear episodes in the Beijing atmosphere.SCIENCE OF THE TOTAL ENVIRONMENT,511,369—380.
MLA Hu, YJ,et al."Identification of the typical metal particles among haze, fog, and clear episodes in the Beijing atmosphere".SCIENCE OF THE TOTAL ENVIRONMENT 511(2015):369—380.
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