Seasonal variation and health risk assessment of atmosphericPM2.5-bound polycyclic aromatic hydrocarbons in a classicagglomeration industrial city, central China
Sixty atmospheric sample concentrations of PM2.5 and polycyclic aromatic hydrocarbons (PAHs) in PM2.5 were analyzed in distinct seasonal variations from a classic agglomeration industrial city. The concentrations of PM2.5 ranged from 6.96 to 260.06 μg/m3 with an average of 177.05 μg/m3. Only 38% of the sampling days were superior to the 24-h limit value (75 μg/m3) of ambient air quality standards (AAQs), and the samples from autumn and winter exceeded the limit value. The total PAHs ranged from 1.51 to 44.51 ng/m3 with an average of 10.65 ng/m3. The highest and lowest concentrations of total PAHs appeared in winter and summer with averages of 22.56 and 4.03 ng/m3, respectively. Correlation analysis revealed that high-molecular-weight PAHs (HMW-PAHs) (4-, 5-, 6-ring PAHs) were significantly and negatively correlated with temperature and water-soluble total organic carbon (WTOC), and significantly correlated with water-soluble total nitrogen (WTN). The 4-, 5- and 6-ring PAHs were dominant, especially those of 4-ring PAHs, which were above 30% of the total PAHs in each season. Source apportionment indicated that PM2.5-bound PAHs in Huangshi were mainly derived from pyrogenic source, vehicle exhaust, coal combustion, and biomass burning. Incremental lifetime cancer risks (ILCRs) showed no potential carcinogenic risk from the PM2.5-bound BaP-eq. ILCRs in winter were the highest, and the risks for adults were approximately an order of magnitude higher than those for children.
National KeyResearch and Development Program of China
; Hubei Universities of Outstanding Young Scientific and TechnologicalInnovation Team Plans
; Special Scientific Research Fundsfor National Basic Research Program of China
; Outstanding Youth Science and Technology Innovation Team Projectsof Hubei Polytechnic University
; Open Research Fund ofKey Laboratory of Minal Environmental Pollution Control andRemedition in Hubei Province
Seasonal variation and health risk assessment of atmospheric PM2.5-bound polycyclic aromatic hydrocarbons in a classic agglomeration industrial city, central China.pdf（2156KB）
1.School of Environmental Science and Engineering, Hubei keyLaboratory of Mine Environmental Pollution Control andRemediation, Hubei Polytechnic University, Huangshi 435003,China 2.State Key Laboratory of Biogeology and Environmental Geology,School of Environmental Studies, China University of Geosciences,Wuhan 430074, China 3.Key Laboratory of Aerosol Chemistry and Physics, Institute of EarthEnvironment, Chinese Academy of Sciences, Xi’an 710075, China
Recommended Citation:
Hu,TP,Zhang,JQ,Xing,XL,et al. Seasonal variation and health risk assessment of atmosphericPM2.5-bound polycyclic aromatic hydrocarbons in a classicagglomeration industrial city, central China[J]. Air Quality, Atmosphere & Health,2018,11(6):683-694.
Seasonal variation and health risk assessment of atmospheric PM2.5-bound polycyclic aromatic hydrocarbons in a classic agglomeration industrial city, central China.pdf
