连接植物性per-和多基基物质积累与根化学特征
Chun Cao1,2,3, Qian Huo1,2,3, Qianhui Tang1,2,3
1College of Geography and Environmental Science, Northwest Normal University, Lanzhou, Gansu 730070, China.
ACS environmental Au
|January 26, 2026
概括
和多基物质 (PFAS) 在蔬菜中以不同的方式积累. 绿叶蔬菜显示出更高的PFAS水平,特别是短链PFBA,而根蔬菜保留了更多的长链PFAS,提供了饮食风险降低策略.
科学领域:
- 环境化学环境化学
- 植物科学 植物科学
- 毒理学 毒理学 毒理学
背景情况:
- 和多醇基物质 (PFAS) 是在粮食作物中发现的持久性有机污染物.
- 了解各种植物物种中的PFAS积累以及影响因素对于食品安全至关重要.
- 用经过处理的废水灌农田是蔬菜吸收PFAS的潜在途径.
研究的目的:
- 在20种蔬菜物种中调查PFAS生物积累模式.
- 为了将PFAS积累与废水灌土壤中种植的蔬菜的根化学特征相关联.
- 评估植物类型和PFAS物种对人类潜在暴露的影响.
主要方法:
- 在用经过处理的废水灌的农田种植的20种蔬菜中分析了PFAS度.
- 量化PFAS物种,重点是短链 perfluorobutanoic 酸 (PFBA) 和长链PFAS.
- 检查了根化学成分 (基碳,O-基碳,溶解有机碳) 和PFAS积累之间的关系.
主要成果:
- 叶菜积累的PFAS度明显高 (平均值:9.24 ng/g) 比根蔬菜.
- 短链PFBA是主要的PFAS物种,在叶菜的可食用上空部分积累.
- 长链PFAS主要保留在根部,其积累受到根部溶解的有机碳的影响.
结论:
- 植物物种和根化学显著影响PFAS的生物积累和分布.
- 作物选择 (选择低积累品种) 可以减少多达90%的食PFAS暴露.
- 球管理策略可以用来减轻粮食作物中PFAS的吸收.
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