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Status of phthalate esters pollution in facility agriculture across China: Spatial distribution, risk assessment, and remediation measures

邻苯二甲酸盐 中国 环境科学 环境修复 农业 污染 污染 分布(数学) 风险评估 环境规划 环境工程 废物管理 水资源管理 工程类 地理 化学 计算机科学 数学 生物 计算机安全 数学分析 生态学 有机化学 考古
作者
Xiaoyun Bai,Kaiwen Pan,Noman Shoaib,Xiaoming Sun,Xiaogang Wu,Lin Zhang
出处
期刊:Science of The Total Environment [Elsevier BV]
卷期号:908: 168416-168416 被引量:9
标识
DOI:10.1016/j.scitotenv.2023.168416
摘要

The pervasive utilization of phthalate esters (PAEs) in plastic products has led to an emergent concern regarding the PAEs contamination in environmental matrices. However, the overall understanding of PAEs pollution in facility agriculture and its relevant risks remain limited. In this paper, the characteristics, health risks, and remediation measures of PAEs pollution in facility agriculture across China were analyzed. In general, PAEs pollution in facility agriculture soil in SWC and vegetables in SC were more serious than that in the other six regions (p < 0.05). The total level of six PAEs ranged from 0.053 to 5.663 mg·kg-1 in soil samples, nd (not detectable) to 12.540 mg·kg-1 in vegetable samples, with mean values of 0.951 mg·kg-1 and 2.458 mg·kg-1, respectively. DEHP and DnBP were dominant in both soil and vegetable samples with a total contribution of over 70 % of the six PAEs, but their concentrations were a little lower in soil samples. The PAEs concentrations of leafy, root, and fruit vegetables exhibited a descending trend. Correlation analysis revealed that the relationships between soil and vegetable PAEs concentrations remained inconclusive, lacking clear correlations. Furthermore, risk assessments indicated that the hazard quotient (HQ) for both total and individual PAEs in the vast majority of vegetable samples remained within acceptable thresholds. Meanwhile, all values for carcinogenic risks (CR) were confined within the range of 10-4. In conclusion, the study outlines remediation measures aimed at precluding and mitigating the environmental risks associated with PAEs exposure. These findings furnish a scientific foundation for the targeted assessment and judicious management of PAEs pollution within facility agriculture landscape of China.
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