SEARCH Articles Figures Tables Enzyme and surfactant-aided oil extraction Ion-pair extraction of an anionic surfactant with a cationic dye Microdroplets, mass transfer and reaction rates ion-pair extraction of anionic surfactant with Reactive extraction surfactants Solid-phase extraction cationic surfactants Solvent extractions surfactant-mediated Spectrophotometric Determination of Anionic Surfactants in Water with On-line Solvent Extraction Surfactants - coal extraction and processing Surfactants solid-liquid extraction