Fluorous nano oil droplet-loaded colorimetric paper-based analytical device for selective enrichment and detection of
Soraka Iwamoto1, Tatsuro Endo1, Hideaki Hisamoto1
1Department of Applied Chemistry, Graduate School of Engineering, Osaka Metropolitan University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka, 599-8531 Japan. hisamoto@omu.ac.jp.
The Analyst
|September 7, 2026
Abstract:
A fluorous nano oil droplet-loaded paper-based analytical device (PAD) was fabricated for simultaneous selective enrichment and colorimetric detection of perfluorooctanesulfonate (PFOS-) during sample flow-through. Increasing sample volume yielded up to 18-fold PFOS- enrichment and enhanced detection sensitivity, whereas interfering anions without fluoroalkyl chains showed no enrichment, demonstrating selective enrichment based on fluorous interactions.
