Neutral analyte focusing by micelle collapse in partial-filling MEKC with UV and ESI-MS detection.
Analyte focusing by micelle collapse is investigated as an on-line sample preconcentration technique in partial-filling MEKC with detection using UV and ESI-MS. Enhancement in peak height sensitivity of more than a 100 was obtained for model alkylphenylketones and dialkylphthalates using analyte focusing by micelle collapse-partial-filling MEKC with UV or ESI-MS detection.
Australian Centre for Research on Separation Science, School of Chemistry, University of Tasmania, Hobart, TAS, Australia. jquirino@utas.edu.au
Joselito P
JP
Quirino
Paul R
PR
Haddad
D020374:Chromatography, Micellar Electrokinetic Capillary / Q000379:methods*; D004573:Electrolytes / Q000737:chemistry; D008823:Micelles; D021241:Spectrometry, Mass, Electrospray Ionization / Q000379:methods*; D013056:Spectrophotometry, Ultraviolet / Q000379:methods*
D004573:Electrolytes; D008823:Micelles