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Int. J. Environ. Res. Public Health 2016, 13(9), 878; doi:10.3390/ijerph13090878

Spatial Variability of PAHs and Microbial Community Structure in Surrounding Surficial Soil of Coal-Fired Power Plants in Xuzhou, China

1
Low Carbon Energy Institute, China University of Mining and Technology, Xuzhou 221008, Jiangsu, China
2
School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou 221008, Jiangsu, China
*
Author to whom correspondence should be addressed.
Academic Editor: Yu-Pin Lin
Received: 19 April 2016 / Revised: 24 August 2016 / Accepted: 25 August 2016 / Published: 2 September 2016
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Abstract

This work investigated the spatial profile and source analysis of polycyclic aromatic hydrocarbons (PAHs) in soil that surrounds coal-fired power plants in Xuzhou, China. High-throughput sequencing was employed to investigate the composition and structure of soil bacterial communities. The total concentration of 15 PAHs in the surface soils ranged from 164.87 to 3494.81 μg/kg dry weight. The spatial profile of PAHs was site-specific with a concentration of 1400.09–3494.81 μg/kg in Yaozhuang. Based on the qualitative and principal component analysis results, coal burning and vehicle emission were found to be the main sources of PAHs in the surface soils. The phylogenetic analysis revealed differences in bacterial community compositions among different sampling sites. Proteobacteria was the most abundant phylum, while Acidobacteria was the second most abundant. The orders of Campylobacterales, Desulfobacterales and Hydrogenophilales had the most significant differences in relative abundance among the sampling sites. The redundancy analysis revealed that the differences in bacterial communities could be explained by the organic matter content. They could also be explicated by the acenaphthene concentration with longer arrows. Furthermore, OTUs of Proteobacteria phylum plotted around particular samples were confirmed to have a different composition of Proteobacteria phylum among the sample sites. Evaluating the relationship between soil PAHs concentration and bacterial community composition may provide useful information for the remediation of PAH contaminated sites. View Full-Text
Keywords: polycyclic aromatic hydrocarbons; spatial distribution; source apportionment; high-throughput sequencing; soil microbial community polycyclic aromatic hydrocarbons; spatial distribution; source apportionment; high-throughput sequencing; soil microbial community
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Ma, J.; Zhang, W.; Chen, Y.; Zhang, S.; Feng, Q.; Hou, H.; Chen, F. Spatial Variability of PAHs and Microbial Community Structure in Surrounding Surficial Soil of Coal-Fired Power Plants in Xuzhou, China. Int. J. Environ. Res. Public Health 2016, 13, 878.

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