Separation and determination of perfluorinated carboxylic acids using capillary zone electrophoresis with indirect photometric detection.
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.
Wójcik
Lena
L
Department of Chemistry, Warsaw University, Pasteura 1, 02-093 Warsaw, Poland.
Korczak
Katarzyna
K
Szostek
Bogdan
B
Trojanowicz
Marek
M
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
D002264:Carboxylic Acids; D005466:Fluorocarbons; D014867:Water