Study on pollution characteristics and health risk assessment of phthalates in soil of Ningxia
ZHANG Xiao-hong1,2, WANG Ya-juan3, TAO Hong1,2, ZHNG Xiao-li1, MA Di1
1. School of Resources and Environment, Ningxia University, Yinchuan 750021, China; 2. Key Laboratory(China-Arab) of Resource Evaluation and Environmental Regulation of Arid Region in Ningxia, Yinchuan 750021, China; 3. School of Economics and Management, Ningxia University, Yinchuan 750021, China
Abstract：A total of 87 samples were collected from the 6different types of land in Ningxia, the concentration of 16 phthalate esters (PAEs) were detected by gas chromatography and mass spectrometer (GC-MS), and the pollution characteristic and component distribution were analyzed. Based on the principal component analysis method, the resource of PAE in different types of land was discussed. The spatial analysis of PAEs was carried out by the ordinary kriging interpolation method. Finally, the health risk model was used to evaluate the population health risks of 6PAEs monomers in the mulching land, garden and cultivated land. The results showed that the total concentrations of ∑16PAEs were between 84.3 and 8728μg/kg, and the mean concentrations were 1500μg/kg in soil. The spatial distribution of PAEs was high in the south and north, and low in the middle. DEHP, DnBP and DIBP were the most abundant component in the soil of the study area, which accounted for average 58.25%, 13.9% and 11.8% of total PAEs. Principal component analysis showed a positive correlation between DnBP, DEHP, DIBP, DEP, DpHP and DMP, DBEP and BMPP, which indicated that these monomers may have similar sources. Human health risk assessment indicated that non-carcinogenic risk value of 6priority control phthalates for adults and children less than 1, and did not exceed the level of non-carcinogenic risk recommended by the us environmental protection agency (EPA). For DEHP and BBP monomer, the carcinogenic risk of adults and children through non-dietary approaches did not exceed the level of carcinogenic risk recommended by the EPA, while the carcinogenic risk values of adults and children through dietary approaches was 7.91×10-6 and 3.08×10-6, respectively, exceeding the carcinogenic risk level recommended by the EPA, which should be received more attention.
张小红, 王亚娟, 陶红, 张晓丽, 马迪. 宁夏土壤中PAEs污染特征及健康风险评价[J]. 中国环境科学, 2020, 40(9): 3930-3941.
ZHANG Xiao-hong, WANG Ya-juan, TAO Hong, ZHNG Xiao-li, MA Di. Study on pollution characteristics and health risk assessment of phthalates in soil of Ningxia. CHINA ENVIRONMENTAL SCIENCECE, 2020, 40(9): 3930-3941.
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