Polycyclic aromatic hydrocarbon concentrations, compositions, sources, and associated carcinogenic risks to humans in farmland soils and riverine sediments from Guiyu, China

The concentrations of 16 priority polycyclic aromatic hydrocarbons （PAHs） were measured in 23 farmland soil samples and 10 riverine sediment samples from Guiyu, China, and the carcinogenic risks associated with PAHs in the samples were evaluated. Guiyu is the largest electronic waste （EW） dismantlin...

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Bibliographic Details
Published in:Journal of environmental sciences (China) 2016-10, Vol.48 (10), p.102-111
Main Authors: Xu, Pengjun, Tao, Bu, Ye, Zhiqiang, Zhao, Hu, Ren, Yue, Zhang, Ting, Huang, Yeru, Chen, Jiping
Format: Article
Language:English
Subjects:
Carcinogenic risk
Carcinogens - analysis
China
Electronic waste
Electronic Waste - analysis
Environmental Monitoring
Geologic Sediments - chemistry
Guiyu
Humans
Polycyclic aromatic hydrocarbon
Polycyclic Aromatic Hydrocarbons - analysis
Risk Assessment
Sediment
Soil
Soil Pollutants - analysis
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Summary:The concentrations of 16 priority polycyclic aromatic hydrocarbons （PAHs） were measured in 23 farmland soil samples and 10 riverine sediment samples from Guiyu, China, and the carcinogenic risks associated with PAHs in the samples were evaluated. Guiyu is the largest electronic waste （EW） dismantling area globally, and has been well known for the primitive and crude manner in which EWs are disposed, such as by open burning and roasting. The total PAH concentrations were 56-567 ng/g in the soils and 181-3034 ng/g in the sediments. The Shanglian and Huamei districts were found to be more contaminated with PAHs than the north of Guiyu. The soils were relatively weakly contaminated but the sediments were more contaminated, and sediments in some river sections might cause carcinogenic risks to the groundwater system. The PAHs in the soils were derived from combustion sources, but the PAHs in the sediments were derived from both combustion and petroleum sources.
ISSN:1001-0742
1878-7320
DOI:10.1016/j.jes.2015.11.035