We developed a preconcentration method in which aerosol droplets containing enriched perfluorinated sulfonic acids (PFSs) are generated through bubble bursting and collected. The droplets were subjected to PFS analysis of perfluorohexane sulfonic acid (PFHxS) and perfluorooctanesulfonic acid (PFOS) through surface‐assisted laser desorption/ionization‐time‐of‐flight mass spectrometry; silver nanoplates (AgNPts) were assisting materials. The method was highly efficient, with an approximately three‐order magnitude enhancement (5 × 10⁻¹³ to 1 × 10⁻¹¹ M). Ultralow PFS concentrations (0.5 ng/L of PFOS; 0.4 ng/L of PFHxS) were detected in preconcentrated tap water containing PFSs. Our method has potential for rapid real‐world PFS detection in water.

中文翻译：

---

通过气泡破裂和表面辅助激光解吸/电离预富集快速检测全氟磺酸


我们开发了一种预浓缩方法，通过气泡破裂产生并收集含有浓缩全氟磺酸（PFS）的气溶胶液滴。通过表面辅助激光解吸/电离飞行时间质谱法对液滴进行全氟己烷磺酸 (PFHxS) 和全氟辛烷磺酸 (PFOS) 的 PFS 分析；银纳米板（AgNPts）是辅助材料。该方法非常高效，增强了大约三个数量级（5 × 10 ^-13至 1 × 10 ^-11 M）。在含有 PFS 的预浓缩自来水中检测到超低 PFS 浓度（0.5 ng/L PFOS；0.4 ng/L PFHxS）。我们的方法具有在现实世界中快速检测水中 PFS 的潜力。