Imperial College London
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ProfessorMajidEzzati

Faculty of Medicine, School of Public Health

Chair in Global Environmental Health
 
 
 
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Contact

 

majid.ezzati Website

 
 
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Location

 

Sir Michael Uren HubWhite City Campus

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Summary

 

Publications

Citation

BibTex format

@article{Lai:2021:10.1021/acs.est.1c01368,
author = {Lai, A and Lee, M and Carter, E and Chan, Q and Elliott, P and Ezzati, M and Yan, L and Wu, Y and Yang, X and Zhao, L and Baumgartner, J and Schauer, J},
doi = {10.1021/acs.est.1c01368},
journal = {Environmental Science and Technology (Washington)},
pages = {15969--15979},
title = {A chemical investigation of household solid fuel use and outdoor air pollution contributions to personal PM2.5 exposures},
url = {http://dx.doi.org/10.1021/acs.est.1c01368},
volume = {55},
year = {2021}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - In communities with household solid fuel use, transitioning to clean stoves/fuels often results in only moderate reductions in fine particulate matter (PM2.5) exposures; the chemical composition of those exposures may help explain why. We collected personal exposure (men and women) and outdoor PM2.5 samples in villages in three Chinese provinces (Shanxi, Beijing, and Guangxi) and measured chemical components, including water-soluble organic carbon (WSOC), ions, elements, and organic tracers. Source contributions from chemical mass balance modeling (biomass burning, coal combustion, vehicles, dust, and secondary inorganic aerosol) were similar between outdoor and personal PM2.5 samples. Principal component analysis of organic and inorganic components identified analogous sources, including a regional ambient source. Chemical components of PM2.5 exposures did not differ significantly by gender. Participants using coal had higher personal/outdoor (P/O) ratios of coal combustion tracers (picene, sulfate, As, and Pb) than those not using coal, but no such trend was observed for biomass burning tracers (levoglucosan, K+, WSOC). Picene and most levoglucosan P/O ratios exceeded 1 even among participants not using coal and biomass, respectively, indicating substantial indirect exposure to solid fuel emissions from other homes. Contributions of community-level emissions to exposures suggest that meaningful exposure reductions will likely require extensive fuel use changes within communities.
AU  - Lai,A
AU  - Lee,M
AU  - Carter,E
AU  - Chan,Q
AU  - Elliott,P
AU  - Ezzati,M
AU  - Yan,L
AU  - Wu,Y
AU  - Yang,X
AU  - Zhao,L
AU  - Baumgartner,J
AU  - Schauer,J
DO  - 10.1021/acs.est.1c01368
EP  - 15979
PY  - 2021///
SN  - 0013-936X
SP  - 15969
TI  - A chemical investigation of household solid fuel use and outdoor air pollution contributions to personal PM2.5 exposures
T2  - Environmental Science and Technology (Washington)
UR  - http://dx.doi.org/10.1021/acs.est.1c01368
UR  - https://pubs.acs.org/doi/10.1021/acs.est.1c01368
UR  - http://hdl.handle.net/10044/1/92894
VL  - 55
ER  -
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