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Issue 10, 2006
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Efficient “total” extraction of perfluorooctanoate from polytetrafluoroethylene fluoropolymer

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Abstract

To determine the optimum conditions for the complete extraction of perfluorooctanoate (PFO) from polytetrafluoroethylene fluoropolymers, sample preparation and pressurized solvent extraction (PSE) conditions were investigated. Solvent extraction temperature, solvent residence time, relaxation time between extractions, and the effects of heating before PSE showed that methanol at 150 °C extraction temperature and a 12 min solvent residence time were the most efficient conditions. Preheating the polymer before extraction at 150 °C for 24 h significantly enhanced the quantity of PFO removed. Heating above 150 °C resulted in loss of PFO. PFO was determined by liquid chromatography with tandem mass spectrometry.

Graphical abstract: Efficient “total” extraction of perfluorooctanoate from polytetrafluoroethylene fluoropolymer

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Publication details

The article was received on 15 May 2006, accepted on 17 Jul 2006 and first published on 14 Aug 2006


Article type: Paper
DOI: 10.1039/B606801D
Citation: Analyst, 2006,131, 1105-1108
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    Efficient “total” extraction of perfluorooctanoate from polytetrafluoroethylene fluoropolymer

    B. S. Larsen, M. A. Kaiser, M. A. Botelho, S. F. Bachmura and L. W. Buxton, Analyst, 2006, 131, 1105
    DOI: 10.1039/B606801D

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