Analysis of polycyclic aromatic hydrocarbons in the atmospheric particulate: focused microwaves for a faster extraction method.
In this paper, improvements obtained by using focused microwaves for extraction, in the analysis of polycyclic aromatic hydrocarbons (PAHs) adsorbed on particulate matter, are discussed. The method was tested on the following PAHs, which are considered to be among the most harmful with regard to carcinogenicity: benzo[a]anthracene, benzo[b]fluoranthene, benzo[k]fluoranthene, benzo[a]pyrene, indeno[1,2,3-cd]pyrene, dibenzo[a,h]anthracene. The extraction of PAHs and concentration of the sample can be performed in 3 h with a recovery of at least 70% and a maximum standard deviation of 4%. These steps are followed by clean-up on a SPE (solid-phase extraction) cartridge and analysis by GC-MS. Real samples collected in the urban area of Bari were analysed according to the proposed procedure.
Dipartimento di Chimica, Università degli Studi di Bari, Italy.
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Bruno
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Caselli
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de Gennaro
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de Rienzo
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Traini
D000397:Air Pollution / Q000032:analysis*; D004784:Environmental Monitoring / Q000379:methods*; D008872:Microwaves; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis*; D013997:Time Factors
D011084:Polycyclic Aromatic Hydrocarbons