揭示了饮用水中的塑料管子漏的化学微生物级联风险因素
Mengqing Fan1,2, Ziqian Wang1,2, Mingchen Yao1,2
1Key Lab of Aquatic Chemistry, State Key Lab of Regional Environment and Sustainability, Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
Environmental science & technology
|October 14, 2025
概括
塑料管道泄露的化学物质会改变饮用水中的微生物,增加健康风险. 聚乙烯 (PE) 管道构成最高的化学风险,需要对塑料水系统进行综合安全评估.
科学领域:
- 环境科学 环境科学
- 微生物学 微生物学
- 公共卫生 公共卫生
背景情况:
- 塑料管道在饮用水分配中很常见,但它们对水质的影响尚未完全理解.
- 现有的安全评估往往忽视了塑料管道漏的化学和微生物风险.
研究的目的:
- 调查与饮用水中的塑料管道相关的化学浸出和微生物风险.
- 分析塑料管道中的液物质如何影响微生物群落和水质.
主要方法:
- 利用里埃变换离子旋转子共振质谱法 (FTICR-MS) 来分析漏的化学物质.
- 采用元基因组分析来评估微生物群落的变化和识别风险.
- 在不同的塑料管材中比较化学浸出和微生物影响:聚乙烯 (PE),聚乙烯 (PVC) 和聚烯随机共聚物 (PPR).
主要成果:
- 塑料管道不断释放溶解有机物 (DOM),包括双 (BPs) 和有机酸 (OPEs).
- 化DOM重塑微生物群落,在化条件下促进耐药性和机会性病原体.
- 在非化条件下,浸的DOM加速了微生物的生长,并丰富了抗生素耐药性基因 (ARG),OP和毒性因子 (VF).
- 聚乙烯 (PE) 显示出最高的化学风险,释放出大量的TCPP和BPF.
- 聚乙烯 (PVC) 支持了最高的机会性病原体 (OP) 丰度,而聚烯随机共聚物 (PPR) 促进了最大的OP多样性.
结论:
- 这些发现挑战了当前的饮用水安全标准,强调了化学泄漏和微生物风险之间的相互作用.
- 综合风险评估框架对于评估塑料饮用水管道的安全性至关重要.
- 必须更加重视塑料管子漏的化学和微生物后果,以确保公共卫生.
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