期刊
ENVIRONMENTAL POLLUTION
卷 169, 期 -, 页码 160-166出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2011.10.008
关键词
Rural indoor air; Solid fuel; PAHs; Nitro-PAHs; Oxygenated-PAHs
资金
- National Natural Science Foundation of China [41001343, 41130754, 40703029]
- Beijing Municipal Government [YB20101000101]
- NIEHS [P42 ES016465]
The concentration and composition of PAHs emitted from biomass cooking fuel were characterized in a rural non-smoking household in northern China. Twenty-two parent PAHs (pPAHs), 12 nitro-PAHs (nPAHs), and 4 oxy-PAHs (oPAHs) were measured in the kitchen, bedroom, and outdoors during both summer and winter. The most severe contamination occurred in the kitchen in the winter, where the daily mean concentrations of pPAHs, nPAHs, and oPAHs were 7500 +/- 4100, 38 +/- 29, and 8400 +/- 9200 ng/m(3), respectively. Our results suggest that the nPAHs were largely from secondary formation in ambient air while oPAHs were either from primary emission of biomass burning or secondary formation from pPAHs in the kitchen. The daily mean benzo(a)pyrene equivalent exposure concentration was as high as 200 +/- 160 ng/m(3) in the winter for the housewife who did the cooking compared to 59 +/- 37 ng/m(3) for the control group that did not cook. (C) 2012 Elsevier Ltd. All rights reserved.
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