Hydrophilicity-switchable deep eutectic solvent-based ultrasound-assisted liquid-phase microextraction for the green and efficient spectrofluorimetric determination of verapamil in human plasma

Keyword: Bromide

Publisher: Nature.com

Published: Jun 21, 2026

In this study, a hydrophilicity-switchable deep eutectic solvent (HS-DES) was prepared by combining nonanoic acid (C9) with tetrabutylammonium bromide (TBAB) and applied as an efficient extraction me… [+1251 chars]

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