Airborne particulates and polycyclic aromatic hydrocarbons (PAHs) in ambient air in Donghe, Northern China
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AbstractFive sets of size-fractionated particles were collected in a northern China village in various seasons in order to measure respirable airborne particulates (PM(10)) and particulate phase polycyclic aromatic hydrocarbons (PAHs) in ambient air. The time-weighted annual mean concentration and standard deviation of PM(10) were 358 +/- 107 mu g/m(3), higher than both the national standard (100 mu g/m(3)) and the levels observed in several contaminated northern Chinese cities. In addition to high levels of PAHs (391 +/- 487 ng/m(3)), the fraction of higher molecular weight PAHs was higher than most reported in the literature, and the time-weighted annual mean benzo(a)pyrene equivalent concentration was 44.2 +/- 51.4 ng/m(3), more than four times the national standard of 10 ng/m(3) and 44 times the WHO guideline of 1 ng/m(3). Apparently, residents in Donghe suffer from exposure to high levels of both PM(10) and particulate phase PAHs. The particle size distribution was centered in the range of Dp <= 3.3 mu m in winter and shifted to the ranges of Dp <= 2.1 mu m and 5.8 mu m < Dp < 10 mu m in spring and summer respectively. Approximately 90.0% of PAHs were associated with airborne particulates with Dp <= 2.1 mu m.
All Author(s) ListWang W, Tao S, Wang WT, Shen GF, Zhao JY, Lam KC
Journal nameJournal of Environmental Science and Health, Part A
Volume Number44
Issue Number9
PublisherTaylor & Francis: STM, Behavioural Science and Public Health Titles
Pages854 - 860
LanguagesEnglish-United Kingdom
KeywordsAirborne particulates; exposure risk; PAHs; rural area; size distribution
Web of Science Subject CategoriesEngineering; Engineering, Environmental; ENGINEERING, ENVIRONMENTAL; Environmental Sciences; ENVIRONMENTAL SCIENCES; Environmental Sciences & Ecology

Last updated on 2020-30-06 at 03:53