Carcinogenic potential of PAHs in oil-contaminated soils from the main oil fields across China

Environmental Science and Pollution Research International
Jie WangXiaoyan Tang

Abstract

The concentrations, composition profiles, and sources of polycyclic aromatic hydrocarbons (PAHs) were analyzed in 55 surface soil samples collected from four oil fields across China (Daqing, DQ; Shengli, SL; Xinjiang, XJ; and Huabei, HB). The total 16 priority PAHs concentrations of DQ, SL, XJ, and HB ranged from 857 to 27,816; 480 to 20,625; 497 to 43,210; and 12,112 to 45,325 ng/g, respectively, with means of 9160; 6394; 13,569; and 22,954 ng/g and the seven possible carcinogenic PAHs accounted for 8-25.7 % of the total PAHs. Almost all the samples were heavily contaminated, and phenanthrene, chrysene, and pyrene were the most dominant components. The PAH isomeric ratios indicated that PAHs in oil fields mainly originated from petroleum. The toxic assessment illustrated that people living and working in oil fields would suffer low carcinogenic risk, which was somehow coincided with the results of epidemiological survey on cancer incidence. It seems essential to pay more attention to the chronic human health effects of exposure to oil fields and to focus new studies on the public health field that involves a large number of people all over the world.

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Citations

Aug 10, 2015·Applied Microbiology and Biotechnology·Jingqiu LiaoYi Huang
Mar 31, 2017·Environmental Science and Pollution Research International·Haihua JiaoZhihui Bai
Feb 10, 2019·Waste Management & Research : the Journal of the International Solid Wastes and Public Cleansing Association, ISWA·Weihua GuJingwei Wang
Dec 3, 2016·Archives of Environmental Contamination and Toxicology·Zhi-Feng ZhouYan-Hong Yao
Oct 29, 2018·Bulletin of Environmental Contamination and Toxicology·Waraporn ChouychaiHung Lee
Dec 31, 2019·Environmental Science and Pollution Research International·Yan-Qin WangZhi-Feng Zhou

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