10.1021/acs.estlett.8b00001.s001
Shuduan Mao
Shuduan
Mao
Jun Li
Jun
Li
Zhineng Cheng
Zhineng
Cheng
Guangcai Zhong
Guangcai
Zhong
Kechang Li
Kechang
Li
Xiang Liu
Xiang
Liu
Gan Zhang
Gan
Zhang
Contribution of Biomass Burning to Ambient Particulate
Polycyclic Aromatic Hydrocarbons at a Regional Background Site in
East China
American Chemical Society
2018
background site
climate change
East China Biomass
Ambient Particulate Polycyclic Aromatic Hydrocarbons
air quality
tracer-based approach
August 2012
air pollutants
15 PAHs
fire count map
Indoor biofuel combustion
August 2015.
Regional Background Site
PAH concentrations
matrix factorization analysis
contribution
biomas
2018-01-30 00:00:00
Journal contribution
https://acs.figshare.com/articles/journal_contribution/Contribution_of_Biomass_Burning_to_Ambient_Particulate_Polycyclic_Aromatic_Hydrocarbons_at_a_Regional_Background_Site_in_East_China/5850174
Biomass
burning has a significant impact on regional air quality,
public health, and climate change. It is an important source of particulate
polycyclic aromatic hydrocarbons (PAHs), which make up a major class
of toxic air pollutants. To estimate the contribution of biomass burning
to ambient particulate PAH concentrations, 15 PAHs and three anhydrosugars
(levoglucosan, galactosan, and mannosan) were analyzed in particulate
samples collected at a background site in east China from August 2012
to August 2015. Higher concentrations of all species were observed
in fall and winter. Indoor biofuel combustion in north China was considered
to be the major contributor to the high concentrations of anhydrosugars
in fall and winter, because there were few fires detected on a fire
count map for this period. A tracer-based approach, using the ratio
of PAHs to levoglucosan (PAHs/lev) in fresh biomass burning aerosols,
was proposed and used to estimate the contribution of biomass burning
to PAHs. The results showed that biomass burning contributed nearly
11% of the total particulate PAHs. The estimation of the contribution
from biomass burning using PAHs/lev agreed well with the results obtained
from an independent positive matrix factorization analysis.