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Title: Cancer risk from gaseous carbonyl compounds in indoor environment generated from household coal combustion in Xuanwei, China
Authors: Lui, KH
Dai, WT
Chan, CS
Tian, LW
Ning, BF
Zhou, YP
Song, XL
Wang, B
Li, JW
Cao, JJ
Lee, SC 
Ho, KF
Keywords: Carbonyl
Indoor air
Cancer risk
Issue Date: 2017
Publisher: Springer
Source: Environmental science and pollution research, 2017, v. 24, no. 21, p. 17500-17510 How to cite?
Journal: Environmental science and pollution research 
Abstract: Airborne carbonyls were characterized from emitted indoor coal combustion. Samples were collected in Xuanwei (Yunnan Province), a region in China with a high rate of lung cancer. Eleven of 19 types of samples (58%) demonstrated formaldehyde concentrations higher than the World Health Organization exposure limit (a 30-min average of 100 mu g m(-3)). Different positive significant correlations between glyoxal/methylglyoxal and formaldehyde/acetaldehyde concentrations were observed, suggesting possible different characteristics in emissions between two pairs of carbonyl compounds. A sample in the highest inhalation risk shows 29.2 times higher risk than the lowest sample, suggesting different coal sampling locations could contribute to the variation of inhalation risk. Inhabitants in Xuanwei also tend to spend more time cooking and more days per year indoors than the national average. The calculated cancer risk ranged from 2.2-63 x 10(-5), which shows 13 types of samples at high-risk level. Cumulative effect in combination with different carbonyls could have contributed to the additive actual inhalation cancer risk. There is a need to explicitly address the health effects of environmentally relevant doses, considering life-long exposure in indoor dwellings.
ISSN: 0944-1344
EISSN: 1614-7499
DOI: 10.1007/s11356-017-9223-y
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