Occurrence of nitro- and oxy-PAHs in agricultural soils in eastern China   and excess lifetime cancer risks from human exposure through soil   ingestion

doi:10.1016/j.envint.2017.09.001

CORC > 北京大学 > 城市与环境学院

	Occurrence of nitro- and oxy-PAHs in agricultural soils in eastern China and excess lifetime cancer risks from human exposure through soil ingestion
	Sun, Zhe ; Zhu, Ying ; Zhuo, Shaojie ; Liu, Weiping ; Zeng, Eddy Y. ; Wang, Xilong ; Xing, Baoshan ; Tao, Shu
刊名	ENVIRONMENT INTERNATIONAL
	2017
关键词	Nitro-PAHs Oxy-PAHs Agricultural soil Excess lifetime cancer risks Soil ingestion Eastern China POLYCYCLIC AROMATIC-HYDROCARBONS HONG-KONG SOILS SOURCE APPORTIONMENT SPATIAL-DISTRIBUTION CONTAMINATED SOILS EMISSION SOURCES OXYGENATED-PAHS NORTHERN CHINA NITRATED-PAHS FATE MODEL
DOI	10.1016/j.envint.2017.09.001
英文摘要	The quality of agricultural soil is vital to human health, however soil contamination is a severe problem in China. Polycyclic aromatic hydrocarbons (PAHs) have been found to be among the major soil contaminants in China. PAH derivatives could be more toxic but their measurements in soils are extremely limited. This study reports levels, spatial distributions and compositions of 11 nitrated (nPAHs) and 4 oxygenated PAHs (oPAHs) in agricultural soils covering 26 provinces in eastern China to fill the data gap. The excess lifetime cancer risk (ELCR) from the exposure to them in addition to 21 parent PAHs (pPAHs) via soil ingestion has been estimated. The mean concentration of Sigma nPAHs and Sigma oPAHs in agricultural soils is 50 +/- 45 mu g/kg and 9 +/- 8 mu g/kg respectively. Both Sigma nPAHs and Sigma oPAHs follow a similar spatial distribution pattern with elevated concentrations found in Liaoning, Shanxi, Henan and Guizhou. However if taking account of pPAHs, the high ELCR by soil ingestion is estimated for Shanxi, Zhejiang, Liaoning, Jiangsu and Hubei. The maximum ELCR is estimated at ca. 10(-5) by both deterministic and probabilistic studies with moderate toxic equivalent factors (TEFs). If maximum TEFs available are applied, there is a 0.2% probability that the ELCR will exceed 10(-4) in the areas covered. There is a great chance to underestimate the ELCR via soil ingestion for some regions if only the 16 priority PAHs in agricultural soils are considered. The early life exposure and burden are considered extremely important to ELCR. Emission sources are qualitatively predicted and for areas with higher ELCR such as Shanxi and Liaoning, new loadings of PAHs and derivatives are identified. This is the first large scale study on nPAHs and oPAHs contamination levels in agricultural soils in China. The risk assessment based on this underpins the policy making and is valuable for both scientists and policy makers.; National Natural Science Foundation of China [41390240, 41629101, 41571130010]; 111 project [B14001]; Undergraduate Student Research Training Program; SCI(E); ARTICLE; 261-270; 108
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/470422]
专题	城市与环境学院
推荐引用方式 GB/T 7714	Sun, Zhe,Zhu, Ying,Zhuo, Shaojie,et al. Occurrence of nitro- and oxy-PAHs in agricultural soils in eastern China and excess lifetime cancer risks from human exposure through soil ingestion[J]. ENVIRONMENT INTERNATIONAL,2017.
APA	Sun, Zhe.,Zhu, Ying.,Zhuo, Shaojie.,Liu, Weiping.,Zeng, Eddy Y..,...&Tao, Shu.(2017).Occurrence of nitro- and oxy-PAHs in agricultural soils in eastern China and excess lifetime cancer risks from human exposure through soil ingestion.ENVIRONMENT INTERNATIONAL.
MLA	Sun, Zhe,et al."Occurrence of nitro- and oxy-PAHs in agricultural soils in eastern China and excess lifetime cancer risks from human exposure through soil ingestion".ENVIRONMENT INTERNATIONAL (2017).