County-scale distribution of polycyclic aromatic hydrocarbons in topsoil of the Yellow River Delta Region

Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
Wenjun XieZhaohua Lu

Abstract

The Yellow River Delta (YRD) is a typical agricultural and petrochemical industrial area in China. To assess the current status of polycyclic aromatic hydrocarbons (PAHs) of soil residues, soil samples (0-15 cm) (n = 82) were collected in Bincheng District, at the geographic center of the YRD. Concentrations of 16 PAHs (∑PAHs) ranged from 181.1 to 2176.0 μg kg(-1), with an average concentration of 359.8 μg kg(-1), showing significant increase along a rural-urban gradient (p ≤ 0.05). The contribution of naphthalene and phenanthrene to ∑PAHs was 48.6-57.6 %, and the contribution of low molecular weight (two- and three-ring) PAHs was 56.3-66.4 % from urban to rural. The significant correlations between ∑PAHs and soil organic C and total N concentrations were observed (p ≤ 0.05), indicated soil organic C and total N can affect PAH distribution in the study area, especially for low molecular weight PAHs. Principal component and multiple linear regression analysis reveal that soil PAHs have different sources in different area. Various petroleum inputs (volatilization, vehicular and non-vehicle combustion) were the main sources of soil PAHs in the urban and suburban areas, and the main source was biomass burning in the rural. In gener...Continue Reading

References

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Oct 26, 2005·Environmental Pollution·H B ZhangG L Zhang
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Oct 17, 2009·Journal of Hazardous Materials·O S Samuel SojinuEddy Y Zeng

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Citations

Mar 5, 2016·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Marek GołębiowskiDanuta Leszczyńska
Jul 12, 2017·The Science of the Total Environment·Pei Zhang, Yinguang Chen
Feb 24, 2019·Environmental Monitoring and Assessment·Bandar A Al-Mur
Oct 4, 2014·Environmental Science and Pollution Research International·Wan-Li MaYi-Fan Li

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