The rural carbonaceous aerosols in coarse, fine, and ultrafine particles during haze pollution in northwestern China

Chong Shu Zhu*, Jun Ji Cao, Chuen-Tinn Tsai, Zhen Xing Shen, Sui Xin Liu, Ru Jin Huang, Ning ning Zhang, Ping Wang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

Abstract

The carbonaceous aerosol concentrations in coarse particle (PM10: Dp ≤ 10 μm, particulate matter with an aerodynamic diameter less than 10 μm), fine particle (PM2.5: Dp ≤ 2.5 μm), and ultrafine particle (PM0.133: Dp ≤ 0.133 μm) carbon fractions in a rural area were investigated during haze events in northwestern China. The results indicated that PM2.5 contributed a large fraction in PM10. OC (organic carbon) accounted for 33, 41, and 62 % of PM10, PM2.5, and PM0.133, and those were 2, 2.4, and 0.4 % for EC (elemental carbon) in a rural area, respectively. OC3 was more abundant than other organic carbon fractions in three PMs, and char dominated EC in PM10 and PM2.5 while soot dominated EC in PM0.133. The present study inferred that K+, OP, and OC3 are good biomass burning tracers for rural PM10 and PM2.5, but not for PM0.133 during haze pollution. Our results suggest that biomass burning is likely to be an important contributor to rural PMs in northwestern China. It is necessary to establish biomass burning control policies for the mitigation of severe haze pollution in a rural area.

Original languageEnglish
Pages (from-to)4569-4575
Number of pages7
JournalEnvironmental Science and Pollution Research
Volume23
Issue number5
DOIs
StatePublished - 1 Mar 2016

Keywords

  • Elemental carbon
  • Organic carbon
  • Particulate matter (PM)
  • Rural area

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