The Use of Polytetraflouroethylene Multi-Capillary Trap Extraction for Isolation of Octylphenol and its Short-Chained Oxyethylates from the Water Matrix

A method for the determination of octylphenol and short-chained octylphenol oxyethylates in water samples using isolation in a polytetrafluoroethylene (PTFE) multi-capillary trap and high-performance liquid chromatography with fluorescence detection was developed. The analytes were adsorbed on the inner surface of the PTFE capillary trap, from which they were eluted by a small amount of acetonitrile. Detection limit of 0.1 µg/L was achieved for each of the analyte. Acceptable recovery results (90-100%) were obtained for spiked river water samples.