Title

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

Authors

Zhu, CS; Cao, JJ; Tsai, CJ; Shen, ZX; Liu, SX; Huang, RJ; Zhang, NN; Wang, P

Abstract

The carbonaceous aerosol concentrations in coarse particle (PM10: Dp <= 10 mu m, particulate matter with an aerodynamic diameter less than 10 mu m), fine particle (PM2.5: Dp <= 2.5 mu m), and ultrafine particle (PM0.133: Dp <= 0.113 mu m) carbon fractions in a rural area were investigated during haze events in northwestern China. The results indicated that PM_2.5contributed a large fraction in PM₁₀. OC (organic carbon) accounted for 33, 41, and 62 % of PM₁₀, PM_2.5, and PM_0.133, 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 PM₁₀and PM_2.5while soot dominated EC in PM0.133. The present study inferred that K⁺, OP, and OC3 are good biomass burning tracers for rural PM₁₀and PM_2.5, but not for PM_0.133during 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.

Corresponding author

Zhu Chongshu

Volume

23

Issue

5

Page

4569-4575

Pub year

March, 2016

Publication name

Environmental Science and Pollution Research

Details

http://link.springer.com/article/10.1007%2Fs11356-015-5694-x