期刊
ENVIRONMENTAL POLLUTION
卷 195, 期 -, 页码 16-23出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2014.08.014
关键词
Phthalate ester; Agricultural soil; Spatial distribution; Potential source; Human health risk
资金
- National Natural Science Foundation of China [21177112, 21320102007]
- Ph.D. Programs Foundation of the Ministry of Education of China [20120101110132]
The extensive utilization of phthalate-containing products has lead to ubiquitous contamination of phthalate esters (PAEs) in various matrices. However, comprehensive knowledge of their pollution in Chinese farmland and associated risks is still limited. In this study, 15 PAEs were determined in soils from agricultural fields throughout the Mainland China. The concentrations of Sigma 15PAE5 were in the range of 75.0-6369 mu g kg(-1). Three provinces (i.e., Fujian, Guangdong and Xinjiang, China) showed the highest loadings of PAEs. Bis(2-Ethylhexyl) phthalate (DEHP) was found as the most abundant component and contributed 71.5% to the Sigma 15PAEs. The major source of PAEs in arable soils was associated with the application of agricultural plastic films, followed by the activities for soil fertility. Furthermore, the non-cancer and carcinogenic risks of target PAEs were estimated. The hazard indexes (HIS) of PAEs in all samples were below I and the carcinogenic risk levels were all within 10(-4). Results from this study will provide valuable information for Chinese agricultural soil management and risk avoidance. (C) 2014 Elsevier Ltd. All rights reserved.
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