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Issue 1, 2003
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Solid-phase microextraction to monitor the sonochemical degradation of polycyclic aromatic hydrocarbons in water

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Abstract

Solid-phase microextraction (SPME) coupled with GC-MS has been used to monitor the degradation of polycyclic aromatic hydrocarbons (PAHs) by ultrasound treatment. Immersion SPME sampling enabled the fast and solventless extraction of target contaminants at the low µg l−1 concentration level. The developed protocol was found to be linear in the concentration range from 0.1 to 50 µg l−1 for most target analytes, with the limits of detection ranging between 0.01 and 0.70 µg l−1 and the relative standard deviations between 4.31 and 27%. The developed SPME protocol was used to follow concentration profiles of aqueous solutions containing 16 PAHs, which were subject to low frequency ultrasonic irradiation. At the conditions employed in this study (80 kHz of ultrasound frequency, 130 W l−1 of applied electric power density, 30 µg l−1 of initial concentration for each of the 16 PAHs), sonochemical treatment was found capable of destroying the lower molecular weight PAHs (naphthalene, acenaphthylene, acenaphthene, fluorene, phenanthrene, anthracene, fluoranthene and pyrene) within 120–180 min of irradiation. The higher molecular weight PAHs were more recalcitrant to ultrasound treatment.

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Publication details

The article was received on 13 Sep 2002, accepted on 30 Oct 2002 and first published on 21 Nov 2002


Article type: Paper
DOI: 10.1039/B208970J
Citation: J. Environ. Monit., 2003,5, 135-140
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    Solid-phase microextraction to monitor the sonochemical degradation of polycyclic aromatic hydrocarbons in water

    E. Psillakis, A. Ntelekos, D. Mantzavinos, E. Nikolopoulos and N. Kalogerakis, J. Environ. Monit., 2003, 5, 135
    DOI: 10.1039/B208970J

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