title: Separation and determination of perfluorinated carboxylic acids using capillary zone electrophoresis with indirect photometric detection.
abstract: Perfluorinated carboxylic acids (PFCAs) belong to anthropogenic fluoroorganic compounds that have been detected in the natural environment and living organisms including humans. A capillary zone electrophoretic method with indirect UV detection using 2,4-dinitrobenzoic acid (2,4-DNBA) as a chromophore probe has been developed for analysis of PFCAs (C6-C12) in water. Optimal analyte resolution and detection sensitivity was obtained with 50 mM Tris solution of pH 9.0 and 50% methanol as a background electrolyte (BGE). The baseline separation of C6-C12 PFCAs was obtained within 20 min with detection limits in the range from 0.6 to 2.4 ppm.
authors.affiliation: Department of Chemistry, Warsaw University, Pasteura 1, 02-093 Warsaw, Poland.
authors.forename: Lena
authors.initials: L
authors.lastname: Wójcik
authors.forename: Katarzyna
authors.initials: K
authors.lastname: Korczak
authors.forename: Bogdan
authors.initials: B
authors.lastname: Szostek
authors.forename: Marek
authors.initials: M
authors.lastname: Trojanowicz
mesh_terms: D002264:Carboxylic Acids / Q000032:analysis / Q000737:chemistry / Q000302:isolation & purification*; D019075:Electrophoresis, Capillary / Q000379:methods*; D005466:Fluorocarbons / Q000032:analysis / Q000737:chemistry / Q000302:isolation & purification*; D006863:Hydrogen-Ion Concentration; D013056:Spectrophotometry, Ultraviolet / Q000379:methods; D013997:Time Factors; D014867:Water / Q000737:chemistry
chemical_list: D002264:Carboxylic Acids; D005466:Fluorocarbons; D014867:Water