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Advisor(s)
Abstract(s)
A methodology based on microwave-assisted extraction (MAE) and LC with fluorescence
detection (FLD) was investigated for the efficient determination of 15 polycyclic
aromatic hydrocarbons (PAHs) regarded as priority pollutants by the US Environmental
Protection Agency and dibenzo(a,l)pyrene in atmospheric particulate
samples. PAHs were successfully extracted from real outdoor particulate matter
(PM) samples with recoveries ranging from 81.4±8.8 to 112.0±1.1%, for all the compounds
except for naphthalene (62.3±18.0%) and anthracene (67.3±5.7%), under
the optimum MAE conditions (30.0 mL of ACN for 20 min at 110ºC). No clean-up
steps were necessary prior to LC analysis. LOQs ranging from 0.0054 ng/m3 for benzo(
a)anthracene to 0.089 ng/m3 for naphthalene were reached. The validated MAE
methodology was applied to the determination of PAHs from a set of real world PM
samples collected in Oporto (north of Portugal). The sum of particulate-bound PAHs
in outdoor PM ranged from 2.5 and 28 ng/m3.
Description
Keywords
Atmospheric particulate samples Liquid chromatography Microwave-assisted extraction PAHs PM
Citation
Publisher
WILEY-VCH Verlag GmbH & Co.