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Polycyclic Aromatic Hydrocarbons (PAHs) in Urban Street Dust of Huanggang, Central China: Status, Sources and Human Health Risk Assessment
- Source :
- Aerosol and Air Quality Research. 19:221-233
- Publication Year :
- 2019
- Publisher :
- Taiwan Association for Aerosol Research, 2019.
-
Abstract
- Twenty-one street dust samples were collected in Huanggang City, Hubei Province, Central China. Sixteen priority polycyclic aromatic hydrocarbons (PAHs) were determined by gas chromatography–mass spectrometry (GC-MS). Concentrations of ∑16PAHs ranged from 622.97 µg kg–1 to 4340.67 µg kg–1 with an average of 1862.10 µg kg–1. Among these PAHs, high-molecular-weight PAHs (four to six rings), which are the predominant PAH contributors in street dust, accounted for 55%–73% of the total PAHs. Mean concentrations of the PAHs among the four functional districts followed the order: education district > traffic area > business district > residential area. However, the individual PAH concentrations exhibited weak correlations with the total organic carbon. Based on the isomer ratios of the PAHs, biomass and coal combustion, and petroleum input were two key factors controlling PAH levels in this study. At a 95% confidence interval, the total incremental lifetime cancer risks for children, adolescents and adults approximated 10–6–1.5 × 10–5. These values were higher than the baseline value for acceptable risk (10–6), indicating a potential carcinogenic risk.
- Subjects :
- Total organic carbon
010504 meteorology & atmospheric sciences
Health risk assessment
Coal combustion products
Central china
Street dust
01 natural sciences
Pollution
Human health
Key factors
Environmental chemistry
Environmental Chemistry
Environmental science
Risk assessment
0105 earth and related environmental sciences
Subjects
Details
- ISSN :
- 20711409 and 16808584
- Volume :
- 19
- Database :
- OpenAIRE
- Journal :
- Aerosol and Air Quality Research
- Accession number :
- edsair.doi...........3b96ffd5eb6787b008f6c862bf8d3794