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Insights into the seasonal characteristics of single particle aerosols in Chengdu based on SPAMS.
Zhang, Junke; Su, Yunfei; Chen, Chunying; Fu, Xinyi; Long, Yuhan; Peng, Xiaoxue; Huang, Xiaojuan; Wang, Gehui; Zhang, Wei.
Afiliação
  • Zhang J; Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 611756, China; Key Lab of Geographic Information Science of the Ministry of Education, School of Geographic Sciences, East China Normal University, Shanghai 200241, China. Electronic address: zhangjunke@home
  • Su Y; Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 611756, China.
  • Chen C; Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 611756, China.
  • Fu X; Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 611756, China.
  • Long Y; Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 611756, China.
  • Peng X; Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 611756, China.
  • Huang X; Department of Environmental Science & Engineering, Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP3), Fudan University, Shanghai 200438, China.
  • Wang G; Key Lab of Geographic Information Science of the Ministry of Education, School of Geographic Sciences, East China Normal University, Shanghai 200241, China.
  • Zhang W; Sichuan Ecological Environment Monitoring Station, Chengdu 610091, China.
J Environ Sci (China) ; 149: 431-443, 2025 Mar.
Article em En | MEDLINE | ID: mdl-39181655
ABSTRACT
To investigate the seasonal characteristics in air pollution in Chengdu, a single particle aerosol mass spectrometry was used to continuously observe atmospheric fine particulate matter during one-month periods in summer and winter, respectively. The results showed that, apart from O3, the concentrations of other pollutants (CO, NO2, SO2, PM2.5 and PM10) were significantly higher in winter than in summer. All single particle aerosols were divided into seven categories biomass burning (BB), coal combustion (CC), Dust, vehicle emission (VE), K mixed with nitrate (K-NO3), K mixed with sulfate and nitrate (K-SN), and K mixed with sulfate (K-SO4) particles. The highest contributions in both seasons were VE particles (24%). The higher contributions of K-SO4 (16%) and K-NO3 (10%) particles occurred in summer and winter, respectively, as a result of their different formation mechanisms. S-containing (K-SO4 and K-SN), VE, and BB particles caused the evolution of pollution in both seasons, and they can be considered as targets for future pollution reduction. The mixing of primary sources particles (VE, Dust, CC, and BB) with secondary components was stronger in winter than in summer. In summer, as pollution worsens, the mixing of primary sources particles with 62 [NO3]- weakened, but the mixing with 97 [HSO4]- increased. However, in winter, the mixing state of particles did not exhibit an obvious evolution rules. The potential source areas in summer were mainly distributed in the southern region of Sichuan, while in winter, besides the southern region, the contribution of the western region cannot be ignored.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Estações do Ano / Monitoramento Ambiental / Aerossóis / Poluentes Atmosféricos / Poluição do Ar / Material Particulado País/Região como assunto: Asia Idioma: En Revista: J Environ Sci (China) Assunto da revista: SAUDE AMBIENTAL Ano de publicação: 2025 Tipo de documento: Article País de publicação: Holanda
Texto completo
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Estações do Ano / Monitoramento Ambiental / Aerossóis / Poluentes Atmosféricos / Poluição do Ar / Material Particulado País/Região como assunto: Asia Idioma: En Revista: J Environ Sci (China) Assunto da revista: SAUDE AMBIENTAL Ano de publicação: 2025 Tipo de documento: Article País de publicação: Holanda