Behavior and risk of perfluorinated surfactants derived from urban non-point sources

对非点源来源的全氟化表面活性剂(PFSS)的负荷和风险进行了评估。这项研究表明，机动车产生的颗粒物对街道灰尘中的PFSS有贡献，然后进入街道径流，最终进入水域。据估计，东京非点源的全氟羧酸盐(PFCA)对地下水的贡献率为16%-46%。在城市河流中，全氟辛烷烃在潮湿天气期间的浓度和负荷明显高于干旱天气期间，令人关注的是，它们通过饮用水产生的风险很高。

Loads and risks of perfluorinated surfactants (PFSs) derived from non-point sources were evaluated. This study revealed that vehicle-derived particles contribute to PFSs in street dust, then in street runoff, and eventually enter into waters. Contributions of perfluorocarboxylates (PFCAs) from non-point sources to groundwater in Tokyo were estimated to be 16-46%. In an urban river, concentrations and loads of PFCAs were significantly higher during wet weather periods than during dry weather periods, and it was concerned that their risks through drinking water were high.