title: Distribution, sources, and potential risk of polycyclic aromatic hydrocarbons in soils from an industrial district in Shanxi, China.
abstract: Concentration, composition profile, orientation distribution, sources, and potential risks of 16 polycyclic aromatic hydrocarbons (PAHs) were analyzed in 76 surface (0-25 cm) soil samples collected from the Changzhi industrial district in July 2014 using a gas chromatography mass spectrometer (GC-MS QP2010 Ultra) system. The composition patterns of the PAHs were dominated by the presence of four-ring PAHs (average 42.9%), followed by three-ring (average 25.9%), five-ring PAHs (average 25.6%), two-ring PAHs (average 5.03%), and lastly, six-ring PAHs (average 0.641%). Source apportionment of the soil PAHs was also performed by the diagnostic ratios, principal component analysis (PCA), and coefficient of divergence (CD) analysis indicated signatures of PAHs sources (including incineration, coal/wood combustion, and vehicular exhaust emission). The total concentration of 16 PAHs (∑16PAHs) found in the roadsides soils (RS) ranged from 2197 to 25,041 μg kg-1, with an arithmetic mean value of 12,245 μg kg-1; followed by the village soils (VS), which ranged from 2059 to 21,240 μg kg-1, with a mean of 8976 μg kg-1; and lastly, the agricultural soils (AS), which ranged from 794 to 16,858 μg kg-1, with a mean of 3456 μg kg-1. According to the numerical effect-based soils quality guidelines of Maliszewska-Kordybach, the levels of PAHs in the sampled industrial areas range from high to heavy contamination. The values of total benzo[a]pyrene toxicity equivalent values (∑Bapeq16PAHs) in the sample areas ranged from 0.087 to 3611 μg kg-1with an average of 969 μg kg-1. According to the soil quality guidelines of Canada, values found in the highest range (100 μg kg-1), which are equal to those of ∑Bapeq16PAHs found in the industrial area samples, will exert adverse biological effects. The results of this research could potentially be useful for local governments to control toxicity exposure, promote actions to alleviate PAHs contamination, and to manage human health at both work and industrial areas.
authors.affiliation: Department of Biological Sciences and Technology, Changzhi University, Changzhi, 046011, China.|Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China.
authors.forename: Haihua
authors.initials: H
authors.lastname: Jiao
authors.affiliation: Department of Biological Sciences and Technology, Changzhi University, Changzhi, 046011, China.
authors.forename: Gaopeng
authors.initials: G
authors.lastname: Bian
authors.affiliation: Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China.
authors.forename: Xi
authors.initials: X
authors.lastname: Chen
authors.affiliation: Department of Biological Sciences and Technology, Changzhi University, Changzhi, 046011, China.
authors.forename: Suiliang
authors.initials: S
authors.lastname: Wang
authors.affiliation: Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China.|College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100190, China.
authors.forename: Xuliang
authors.initials: X
authors.lastname: Zhuang
authors.affiliation: Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China. zhbai@rcees.ac.cn.|College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100190, China. zhbai@rcees.ac.cn.
authors.forename: Zhihui
authors.identifier: http://orcid.org/0000-0002-3818-527X
authors.initials: Z
authors.lastname: Bai
mesh_terms: D002170:Canada; D002681:China; D004784:Environmental Monitoring; D006801:Humans; D011084:Polycyclic Aromatic Hydrocarbons; D018570:Risk Assessment; D012987:Soil / Q000737:chemistry*; D012989:Soil Pollutants
chemical_list: D011084:Polycyclic Aromatic Hydrocarbons; D012987:Soil; D012989:Soil Pollutants
keywords: Benzo[a]pyrene; Contamination; PAHs; Potential risk; Soil