Arid
DOI10.3390/w10080999
Assessing the Risk of Phthalate Ester (PAE) Contamination in Soils and Crops Irrigated with Treated Sewage Effluent
Li, Yan1,2,3; Huang, Guanhua3; Gu, Hua1,2; Huang, Quanzhong3; Lou, Chunhua1,2; Zhang, Lei1,2; Liu, Honglu1,2
通讯作者Liu, Honglu
来源期刊WATER
ISSN2073-4441
出版年2018
卷号10期号:8
英文摘要

Waste/reclaimed irrigation water has been promoted due to water shortages in arid and semi-arid areas. However, this process may be one of the sources of phthalate esters (PAEs) in agricultural soils, and the potential risks of PAEs for soil ecosystems and human health have attracted considerable attention. A two-year (from October 2014 to October 2016) field experiment was conducted to assess the contamination risk of PAEs from reclaimed irrigation water in winter wheat (Triticum aestivum L.) and summer maize (Zea mays L.) fields on the North China Plain. Three types of irrigation water quality were arranged for each variety, including reclaimed water, groundwater, and a mixture of reclaimed water and groundwater (1:1, v/v). The results indicate that the concentrations of the 6 PAEs in topsoil ranged from 2.79 to 5.34 mg/kg at the time of crop harvest. There was no significant effect of reclaimed irrigation water on the concentrations of PAEs in the soil. Di-n-butyl phthalate (DnBP) and di (2-ethylhexyl) phthalate (DEHP) were the most abundant contaminants in all soil samples, accounting for 43.2%68.7% and 27.1%48.6%, respectively, of the 6 PAEs. The levels of dimethyl phthalate (DMP) and DnBP in all soil samples exceeded the allowable soil concentrations, but the levels were far below the recommended soil cleanup objectives. The grain yields of winter wheat and summer maize ranged from 4.35 to 7.1 t/ha and 1.03 to 6.46 t/ha, respectively. There were no significant effects of reclaimed water on the growth characteristics and grain yield of winter wheat (p > 0.05); however, the effect of reclaimed irrigation water on summer maize was influenced by climate. The concentrations of the 6 PAEs in wheat grain and maize grain ranged from 1.03 to 4.05 mg/kg and from 0.37 to 3.29 mg/kg, respectively. For the same variety, there was no significant difference in the concentrations of the 6 PAEs in cereal grains among different treatments (p > 0.05). DEHP and DnBP were the most abundant components in most crop samples, accounting for 31.6%77.9% and 21.1%64.7%, respectively, of the 6 PAEs. The concentrations of the PAEs, DnBP and DEHP in cereal grains were lower than those in the reference doses. The BCFs of the 6 PAEs and of each PAE in cereal grains were 0.431.25 and 0.3335.75, respectively. The BCFs of butyl benzyl phthalate (BBP) were the highest (1.4135.75), followed by DMP and DEHP. There were almost no significant differences in the BCFs of each PAE among the three treatments. The total carcinogenic risks of PAEs were 2.82 x 10(-5) for adults and 1.81 x 10(-5) for children. The total non-carcinogenic risks of PAEs were 3.37 x 10(-1) for adults and 7.98 x 10(-1) for children. DHEP was the dominant contributor to both risks, and the intake of cereals was the main exposure pathway for the two risks. In conclusion, there were no significant effects of reclaimed irrigation water on the concentrations of PAEs in soil and cereal grains compared with groundwater irrigation, and the human health risks were within the acceptable range. Long-term studies are needed to evaluate the long-term effects of reclaimed irrigation water on the contamination risk posed by PAEs.


英文关键词phthalate esters soil winter wheat summer maize reclaimed water
类型Article
语种英语
国家Peoples R China
收录类别SCI-E
WOS记录号WOS:000448462700033
WOS关键词POLYCYCLIC AROMATIC-HYDROCARBONS ; WASTE-WATER IRRIGATION ; AGRICULTURAL SOILS ; ACID ESTERS ; PLASTIC FILM ; CHINA CONCENTRATIONS ; RIVER DELTA ; URBAN SOILS ; FATE ; AREA
WOS类目Water Resources
WOS研究方向Water Resources
来源机构中国农业大学
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/213620
作者单位1.Beijing Water Sci & Technol Inst, Beijing 100048, Peoples R China;
2.Beijing Engn Tech Res Ctr Explorat & Utilizat Non, Beijing 100048, Peoples R China;
3.China Agr Univ, Coll Water Conservancy & Civil Engn, Beijing 100083, Peoples R China
推荐引用方式
GB/T 7714
Li, Yan,Huang, Guanhua,Gu, Hua,et al. Assessing the Risk of Phthalate Ester (PAE) Contamination in Soils and Crops Irrigated with Treated Sewage Effluent[J]. 中国农业大学,2018,10(8).
APA Li, Yan.,Huang, Guanhua.,Gu, Hua.,Huang, Quanzhong.,Lou, Chunhua.,...&Liu, Honglu.(2018).Assessing the Risk of Phthalate Ester (PAE) Contamination in Soils and Crops Irrigated with Treated Sewage Effluent.WATER,10(8).
MLA Li, Yan,et al."Assessing the Risk of Phthalate Ester (PAE) Contamination in Soils and Crops Irrigated with Treated Sewage Effluent".WATER 10.8(2018).
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