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Inhalation exposure to ambient polycyclic aromatic hydrocarbons and lung cancer risk of Chinese population

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Zhang, Yanxu, Tao, Shu, Shen, Huizhong, Ma, Jianmin·2009·Proceedings of the National Academy of Sciences

Abstract

An Euler atmospheric transport model (Canadian Model for Environmental Transport of Organochlorine Pesticides, CanMETOP) was applied and validated to estimate polycyclic aromatic hydrocarbon (PAH) ambient air concentrations at ground level in China based on a high-resolution emission inventory. The results were used to evaluate lung cancer risk for the Chinese population caused by inhalation exposure to PAHs. The uncertainties of the transport model, exposure, and risk analysis were assessed by using Monte Carlo simulation, taking into consideration the variation in PAH emission, aerosol and OH radical concentrations, dry deposition, respiration rate, and genetic susceptibility. The average benzo[ a ]pyrene equivalent concentration (B[ a ]P eq ) was 2.43 [≈1.29–4.50 as interquartile range (IR)] ng/m 3 . The population-weighted B[ a ]P eq was 7.64 (IR, ≈4.05–14.1) ng/m 3 because of the spatial overlap of the emissions and population density. It was estimated that 5.8% (IR, ≈2.0–11%) of China's land area, where 30% (IR, ≈17–43%) of the population lives, exceeded the national ambient B[ a ]P eq standard of 10 ng/m 3 . Taking into consideration the variation in exposure concentration, respiration rate, and susceptibility, the overall population attributable fraction (PAF) for lung cancer caused by inhalation exposure to PAHs was 1.6% (IR, ≈0.91–2.6%), corresponding to an excess annual lung cancer incidence rate of 0.65 × 10 −5 . Although the spatial variability was high, the lung cancer risk in eastern China was higher than in western China, and populations in major cities had a higher risk of lung cancer than rural areas. An extremely high PAF of >44% was estimated in isolated locations near small-scale coke oven operations.

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Metadata

Authors
Zhang, Y., Tao, S., Shen, H., & Ma, J.
Venue
Proceedings of the National Academy of Sciences
Published
2009-12-15
Volume
106
Issue
50
Pages
21063-21067
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W1973722072
Cited by
462
References
25
FWCI
11.85
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Inhalation exposure to ambient polycyclic aromatic hydrocarbons and lung cancer risk of Chinese population. https://app.cochat.ai/papers/10.1073/pnas.0905756106
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Zhang, Y., Tao, S., Shen, H., & Ma, J. (2009). Inhalation exposure to ambient polycyclic aromatic hydrocarbons and lung cancer risk of Chinese population. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.0905756106

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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