title: Rapid detection of trace amounts of surfactants using nanoparticles in fluorometric assays.
abstract: Rapid microtiter assays that utilize the time-resolved fluorescence resonance energy transfer or quenching of dye-labeled proteins adsorbed onto the surfaces of polystyrene or maghemite nanoparticles have been developed for the detection and quantification of trace amounts of surfactants at concentrations down to 10 nM.
authors.affiliation: Laboratory of Biophysics and Medicity, University of Turku, Tykistökatu 6A, Turku, Finland. harri.harma@utu.fi
authors.forename: Harri
authors.initials: H
authors.lastname: Härmä
authors.forename: Susana
authors.initials: S
authors.lastname: Laakso
authors.forename: Sari
authors.initials: S
authors.lastname: Pihlasalo
authors.forename: Pekka
authors.initials: P
authors.lastname: Hänninen
authors.forename: Bertrand
authors.initials: B
authors.lastname: Faure
authors.forename: Subhasis
authors.initials: S
authors.lastname: Rana
authors.forename: Lennart
authors.initials: L
authors.lastname: Bergström
mesh_terms: D004396:Coloring Agents / Q000737:chemistry; D005290:Ferric Compounds / Q000737:chemistry; D031541:Fluorescence Resonance Energy Transfer; D005470:Fluorometry / Q000379:methods*; D053758:Nanoparticles / Q000737:chemistry*; D011137:Polystyrenes / Q000737:chemistry; D011506:Proteins / Q000737:chemistry; D013501:Surface-Active Agents / Q000032:analysis*
chemical_list: D004396:Coloring Agents; D005290:Ferric Compounds; D011137:Polystyrenes; D011506:Proteins; D013501:Surface-Active Agents; C000499:ferric oxide