Nitrated and oxygenated polycyclic aromatic hydrocarbons emissions from solid fuel combustion in rural China: Database of 12 real-world scenarios for residential cooking and heating activities

Polycyclic aromatic hydrocarbons (PAHs) derivatives such as oxygenated PAHs (oPAHs) and nitrated PAHs (nPAHs), are receiving raising concerns due to their high toxic potential. Incomplete solid fuel combustion can release large quantities of PAHs derivatives, especially in low-efficiency domestic st...

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Published in:The Science of the total environment Vol. 852; p. 158501
Main Authors: Wang, Jinze, Du, Wei, Chen, Yuanchen, Lei, Yali, Chen, Long, Shen, Guofeng, Pan, Bo, Tao, Shu
Format: Journal Article
Language:English
Published: Elsevier B.V 15.12.2022
Subjects:
arithmetics
biomass
China
coal
Emission factors
environment
fuel combustion
Nitrated PAHs
Oxygenated PAHs
peat
Residential stoves
Solid fuel combustion
toxicity
China
Emission factors
Solid fuel combustion
Residential stoves
Nitrated PAHs
Oxygenated PAHs
ISSN:0048-9697, 1879-1026, 1879-1026
Online Access:Get full text
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Summary:Polycyclic aromatic hydrocarbons (PAHs) derivatives such as oxygenated PAHs (oPAHs) and nitrated PAHs (nPAHs), are receiving raising concerns due to their high toxic potential. Incomplete solid fuel combustion can release large quantities of PAHs derivatives, especially in low-efficiency domestic stoves. In this study, field measurements were conducted in rural Chinese homes to determine emissions of nPAHs and oPAHs from solid fuel combustion. A total of 12 fuel-stove combinations including cooking and space heating activities were investigated. Emission factors (EFs) of total nPAHs and oPAHs were in the range of 1.0–682.1 μg/kg and 0.01–131.7 mg/kg, respectively, with arithmetic means and stand deviations of 53.5 ± 72.5 μg/kg and 13.9 ± 24.4 mg/kg, respectively. The EFs of nPAHs and oPAHs for coal combustion (including honeycomb briquette, coal chunk, and peat tested in this study) were 30.2 ± 28.1 μg/kg and 1.5 ± 2.9 mg/kg, respectively, much lower than that for biomass burning (p < 0.05). The combustion phase could significantly affect the PAHs derivative emissions with higher emissions at initial phase than that at stable phase. Fuel type was found to affect the EFs, composition profiles, and ratios of PAHs derivatives to parent PAHs. This study tries to have an insight of PAHs derivative emissions from various solid fuel combustion, which would be useful in understanding the atmospheric PAHs derivative pollutions in China. [Display omitted] •EFs of nPAHs and oPAHs from 12 fuel-stove combinations were measured in field.•Fuel type can influence EFs and composition profiles of PAHs derivatives.•Coal briquetting lead to the increase of PAHs derivative emissions.•EFs at initial phase are 2.2–4.6 folds higher than that at stable phase.
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ISSN:0048-9697
1879-1026
1879-1026
DOI:10.1016/j.scitotenv.2022.158501