PFAS在地表土壤中的全球生态和健康风险
Min Wei1, Zhongxing Chen2, Kun Yang2
1State Key Laboratory of Soil Pollution Control and Safety, Zhejiang University, Hangzhou 310058, China; College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China.
Environment international
|November 18, 2025
概括
全球土壤被和多基基物质 (PFAS) 污染是一个重大问题. 像PFOS这样的长链PFAS占主导地位,在欧洲和美国存在热点,构成生态和人类健康风险.
科学领域:
- 环境化学环境化学
- 生态毒理学 生态毒理学
- 土壤科学 土壤科学
背景情况:
- 和多醇基物质 (PFAS) 是持久性,有毒的化学物质,在环境中广泛存在.
- 了解PFAS土壤污染和相关风险的全球规模对于生态和人类健康至关重要.
- 现有的关于PFAS土壤污染的数据是分散的,阻碍了全面的风险评估.
研究的目的:
- 综合全球PFAS土壤度数据,以评估污染模式和风险.
- 为了确定PFAS污染的地理热点.
- 评估不同类型的PFAS所带来的潜在健康和环境风险.
主要方法:
- 进行了大约2000个PFAS度数据点的元分析,这些数据点来自106项对地表土壤进行的同行评审研究.
- 采用概率方法来评估与安全值相对的污染水平.
- 分析了地理分布,并确定了污染热点.
主要成果:
- 长链遗留PFAS,特别是 perfluorooctane硫酸 (PFOS),是主要的土壤污染物 (中位数为1.03 ng g-1).
- 30.32%的全球电网超过了PFAS的安全门.
- 地理热点包括中欧,美国东北部和中国东南部,欧洲和美国的PFHxS风险较高.
- 短链PFAS显示出更高的流动性,增加了地下水泄漏潜力.
结论:
- 土壤中的PFAS污染对全球环境和健康构成重大风险.
- 迫切需要为PFAS制定全球土壤质量标准.
- 研究结果为公共卫生政策和土壤管理策略提供了关键的见解.
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