Occurrence, Sources, and Health Risks of Polycyclic Aromatic Hydrocarbons in Road Environments from Harbin, a Megacity of China

To obtain a comprehensive understanding about that occurrence, sources, and effects on human health of polycyclic aromatic hydrocarbons (PAHs) in road environmental samples from Harbin, concentrations of 32 PAHs in road dust, green belt soil, and parking lot dust samples were quantified. The total P...

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Published in:Toxics (Basel) 2023-08, Vol.11 (8), p.695
Main Authors: Li, Jin-Nong, Zhang, Ye, Wang, Jian-Xin, Xiao, Hang, Nikolaev, Anatoly, Li, Yi-Fan, Zhang, Zi-Feng, Tang, Zhong-Hua
Format: Article
Language:English
Subjects:
Biomass burning
Cancer
Combustion
Dust
Emissions
Environmental aspects
green belt soil
Green belts
Health aspects
Health risks
Megacities
Molecular weight
PAHs
Parking facilities
parking lot dust
Petroleum
Pollutants
Pollution
Polycyclic aromatic hydrocarbons
Quality control
road dust
Roads
Soils
source apportionment
temporal and spatial variation
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Summary:To obtain a comprehensive understanding about that occurrence, sources, and effects on human health of polycyclic aromatic hydrocarbons (PAHs) in road environmental samples from Harbin, concentrations of 32 PAHs in road dust, green belt soil, and parking lot dust samples were quantified. The total PAH concentrations ranged from 0.95 to 40.7 μg/g and 0.39 to 43.9 μg/g in road dust and green belt soil, respectively, and were dominated by high molecular weight PAHs (HMW-PAHs). Despite the content of PAHs in arterial roads being higher, the composition profile of PAHs was hardly influenced by road types. For parking lot dust, the range of total PAH concentrations was 0.81–190 μg/g, and three-ring to five-ring PAHs produced the maximum contribution. Compared with surface parking lots (mean: 6.12 μg/g), higher total PAH concentrations were detected in underground parking lots (mean: 33.1 μg/g). The diagnostic ratios of PAHs showed that petroleum, petroleum combustion, and biomass/coal combustion were major sources of PAHs in the samples. Furthermore, according to the Incremental Lifetime Cancer Risk model, the cancer risks of three kinds of samples for adults and children were above the threshold (10−6). Overall, this study demonstrated that PAHs in the road environment of Harbin have a certain health impact on local citizens.
ISSN:2305-6304
2305-6304
DOI:10.3390/toxics11080695