Airborne fine particulate pollution in Jinan, China: Concentrations, chemical compositions and influence on visibility impairment

Lingxiao Yang, Xuehua Zhou, Zhe Wang, Yang Zhou, Shuhui Cheng, Pengju Xu, Xiaomei Gao, Wei Nie, Xinfeng Wang, Wenxing Wang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

116 Citations (Scopus)

Abstract

Daily PM2.5samples were collected simultaneously at an urban site (SD) and a rural site (MP) in Jinan, China from March 2006 to February 2007. The samples were analyzed for major inorganic and organic water-soluble ions, 24 elements and carbonaceous species to determine the spatial and temporal variations of PM2.5mass concentrations and chemical compositions and evaluate their contributions to visibility impairment. The annual average concentrations of PM2.5were 148.71μgm-3and 97.59μgm-3at SD and MP, respectively. The predominant component of PM2.5was (NH4)2SO4at SD and organic mass at MP, which accounted for 28.71% and 37.25% of the total mass, respectively. The higher SOR (sulfur oxidation ratio) and ratios of OC/EC at SD indicated that the formation of secondary inorganic ions and secondary organic aerosols (SOA) could be accelerated in the urban area. Large size (NH4)2SO4and large size organic mass were the most important contributors to visibility impairment at SD and MP, accounting for 43.80% and 41.02% of the light extinction coefficient, respectively.
Original languageEnglish
Pages (from-to)506-514
Number of pages9
JournalAtmospheric Environment
Volume55
DOIs
Publication statusPublished - 1 Aug 2012
Externally publishedYes

Keywords

  • Chemical composition
  • Mass closure
  • PM 2.5
  • Visibility impairment

ASJC Scopus subject areas

  • Environmental Science(all)
  • Atmospheric Science

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