Distribution, sources and potential toxicological significance of polycyclic aromatic hydrocarbons (PAHs) in surface soils of the Yellow River Delta, China

被引:101
作者
Yuan, Hongming [1 ,2 ,3 ]
Li, Tiegang [1 ]
Ding, Xigui [2 ]
Zhao, Guangming [2 ]
Ye, Siyuan [2 ]
机构
[1] Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China
[2] CGS, Minist Land & Resources, Qingdao Inst Marine Geol, Key Lab Coastal Wetland Biogeosci, Qingdao 266071, Peoples R China
[3] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
基金
中国国家自然科学基金;
关键词
PAHs; Pollution; PCA; Toxic assessment; Yellow River Delta; Soils; PERSISTENT ORGANIC POLLUTANTS; SOURCE APPORTIONMENT; POLYCHLORINATED-BIPHENYLS; DISTRIBUTION PATTERNS; LAKE-MICHIGAN; SEDIMENTS; SEA; BIOAVAILABILITY; CONTAMINATION; ATMOSPHERE;
D O I
10.1016/j.marpolbul.2014.03.043
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
PAH concentrations of 61 surface soil samples collected from the Yellow River Delta (YRD), China were measured to determine occurrence levels, sources, and potential toxicological significance of PAHs. The total concentrations of Sigma PAHs ranged from 27 to 753 ng/g d.w., with a mean of 118 +/- 132 ng/g. The highest concentrations was found in the mid-southern part of the YRD (753 ng/g), which was associated with the oil exploration. The ratios indicated that the PAHs throughout the YRD were mostly of pyrogenic origin; while various sites in mid-southern part in the region were derived mainly from the petrogenic sources. Multivariate statistical analyses supported that the PAHs in surface soils of the YRD were principally from the coal and biomass combustion, petroleum spills, and/or vehicular emissions. The toxic assessment suggested that the PAHs in soils were at low potential of ecotoxicological contamination level for the YRD. (C) 2014 The Authors. Published by Elsevier Ltd.
引用
收藏
页码:258 / 264
页数:7
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