Journal
ENVIRONMENTAL POLLUTION
Volume 216, Issue -, Pages 935-942Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2016.07.002
Keywords
PAHs derivatives; Inhalation exposure; Household air pollution; Clean cookstoves
Categories
Funding
- National Natural Science Foundation of China [41390240, 41130754, 41301554, 41571130010]
- Ministry of Science and Technology [2015DFG92090]
- Global Alliance for Clean Cookstoves, United National Foundations
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Polycyclic aromatic hydrocarbons (PAHs) derivatives like nitrated and oxygenated PAHs are of growing concerns because of considerably higher toxicity and important roles during atmospheric chemical reactions. Residential solid fuel combustion is likely to be one large primary source of these pollutants in developing countries. In this study, inhalation exposure to nitrated and oxygenated PAH derivatives was evaluated among rural residents using carried samplers. The exposure levels of individual nitrated PAHs ranged from 4.04 (9-nitrated phenanthrene) to 89.8 (9-nitrated anthracene) pg/m(3), and of oxy-PAHs were 0.570 (benzo(alanthracene-7, 12-dione) to 7.99 (Benzanthrone) ng/m(3), generally higher in wood user than that in anthracite user. A majority of derivatives in particle presented in PM2.5 (80% for nitrated naphthalene and over 90% for other targets) and even fine PM1.0. Mass fractions of PAH derivatives in fine and ultra-fine particles were significantly higher than the fractions of corresponding parent PAHs, indicating more adverse health outcomes induced by these derivatives. The inhalation exposure levels for residents adopting wood gasifier burners was significantly lower than the documented results for those burning wood in typical built-in brick stoves, and comparable to those using LPG and electricity, which provided vital information for clean stove development and intervention programs. (C) 2016 Elsevier Ltd. All rights reserved.
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