We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Status, sources, and risk assessment of polycyclic aromatic hydrocarbons in urban soils of Xi’an, China.
- Authors
Bao, Huanyu; Hou, Shaowei; Niu, Hao; Tian, Kai; Liu, Xueping; Wu, Fuyong
- Abstract
To identify status, source of polycyclic aromatic hydrocarbons (PAHs) in urban soils and to assess soil environmental quality in Xi’an City, China, total 45 soil samples were collected from surface layer (0-10 cm) in different functional areas. Total concentrations of 16 US EPA priority PAHs ranged from 149.9 to 5770 μg kg−1, with a mean of 1246 μg kg−1. High molecular weight (HMW) PAHs accounted for the majority (42.4-72.2%) of the total PAHs in the urban soils, and phenanthrene (Phe), fluorene (Flo), pyrene (Pyr), benzo(b)fluoranthene (BbF), and chrysene (Chr) were the major compounds. Concentrations of PAHs varied among different functional areas. High level of PAHs was particularly apparent in industrial zones and city road overpass, while low level was recorded in scenic spots and campus. The integration of isomer ratios, principal component analysis (PCA), and positive matrix factor (PMF) indicated that the sources of PAHs in Xi’an urban soils were mainly derived from vehicle emissions and coal combustion. Based on incremental lifetime cancer risks (ILCR) model, the urban soils from the three functional areas (industrial zone, urban road, and city road overpass) posed potential cancer risk, and the cancer risks of direct ingestion for children were apparently higher than that for adolescence and for adult, respectively. Therefore, attention should be paid to the health risk for children exposed to PAHs in the urban soils.
- Subjects
XI'AN Shi (China); CHINA; POLYCYCLIC aromatic hydrocarbons; URBAN soils; ENVIRONMENTAL risk assessment; SOIL pollution; CANCER risk factors
- Publication
Environmental Science & Pollution Research, 2018, Vol 25, Issue 19, p18947
- ISSN
0944-1344
- Publication type
Article
- DOI
10.1007/s11356-018-1928-z