在不同土地使用区的地下水中对化物和多化物质的可疑和非目标分析
Jiazheng Sun1, Yanna Liu2, Linlin Yao2
1MOE Key Laboratory of Groundwater Quality and Health, School of Environmental Studies, China University of Geosciences, Wuhan 430078, China.
Environmental science & technology
|January 30, 2025
概括
和多基物质 (PFAS) 在各种土地用途中污染地下水,新兴PFAS在城市地区占主导地位,传统PFAS在农村地区占主导地位. 风险评估因地点而异,强调需要进行广泛分析.
科学领域:
- 环境化学环境化学
- 环境科学 环境科学
- 毒理学 毒理学 毒理学
背景情况:
- 地下水被和多基物质 (PFAS) 污染是一个越来越令人担忧的问题.
- 关于不同土地使用环境中地下水中的PFAS存在和风险的研究有限.
- 了解PFAS分布对于评估环境和健康风险至关重要.
研究的目的:
- 调查31种PFAS的发生和分布,包括新兴和传统类型,在中国达通市各种土地使用区的地下水中.
- 为了比较农村,农业,制药,机场和工业园区环境之间的PFAS概况和度.
- 根据频率,度和环境属性评估与已识别的PFAS相关的风险.
主要方法:
- 在地下水样本中使用高分辨率质谱仪对PFAS的可疑和非目标分析.
- 从五个不同的土地使用区域收集样本:农村,种植,制药园,机场和工业园.
- 使用检测频率,度和持久性,生物积累和毒性 (PBT) 属性来确定风险优先级.
主要成果:
- 确定了31种PFAS (16种新兴,15种遗留) 的PFAS (ΣPFAS) 总度从0.775 ng/L (农村) 到80.7 ng/L (制药园).
- 传统的PFAS在农村地下水中占主导地位,而新兴的PFAS在其他地区占主导地位.
- 在全球范围内检测到的是 perfluorooctanoic acid (PFOA),PFDA,PFUnDA,以及 6:2 二硫酸盐 (6:2 FTS).
结论:
- PFAS污染在地下水中无处不在,甚至延伸到人类活动最小的地区.
- 新兴的PFAS越来越普遍,需要先进的分析技术,如可疑和非目标分析,以进行全面的暴露评估.
- 根据土地使用类型,PFAS的风险概况大大不同,需要量身定制的管理策略.
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