通过中断的能量传输检测和多基基物质 (PFAS)
Alberto Concellón1,2, Timothy M Swager1
1Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States.
Angewandte Chemie (International ed. in English)
|October 5, 2023
概括
一个新的传感器使用聚合物和染料系统检测水中的per-和多基物质 (PFAS). 这项技术可以在水分系统中选择性检测有害化学物质,如PFOA和PFOS.
科学领域:
- 环境科学 环境科学
- 分析化学 分析化学
- 材料科学 材料科学 材料科学
背景情况:
- 和多醇基物质 (PFAS) 是广泛存在的环境污染物,引起严重关注.
- 目前缺少在水分系统中对PFAS的持续监测技术.
研究的目的:
- 开发一种选择性比度传感方法,用于在水环境中检测 perfluorooctanoic 酸 (PFOA) 和 perfluorooctane 硫酸盐 (PFOS).
- 创建一个能够在配水基础设施内持续监控的传感器.
主要方法:
- 使用高化聚 ((p-乙烯乙烯) 和嵌入式化方染料进行比度传感.
- 杆激电传输和德克斯特能量传输机制,通过PFAS与聚合物染料电子合的相互作用来调节.
- 在螺旋涂层薄膜和聚合物纳米粒子中评估传感器性能.
主要成果:
- 在μg/L度下实现了PFOA和PFOS的选择性检测.
- 聚合物薄膜的可选检测极限约为150ppb,聚合物纳米粒子的可选检测极限约为50ppb.
- 确认的传感器功能是独立于水类型的,在毫克和井水中显示了类似的反应.
结论:
- 开发的比度传感方法为持续的PFAS监测提供了一个有前途的方法.
- 聚合物/染料系统对关键的PFAS化合物进行了选择性和敏感的检测.
- 传感器在不同水类型的强度支持其在现实世界水源监测场景中的潜在应用.
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