Particle-size distribution and gas/particle partitioning of atmospheric polybrominated diphenyl ethers in urban areas of Greece

TitleParticle-size distribution and gas/particle partitioning of atmospheric polybrominated diphenyl ethers in urban areas of Greece
Publication TypeJournal Article
Year of Publication2009
AuthorsMandalakis, M, Besis A, Stephanou EG
JournalEnvironmental Pollution
Volume157
Issue4
Pages1227 - 1233
KeywordsAerosols, Cascade impactor, Particle-size distribution, PBDEs, Urban atmosphere
Abstract

Ambient concentrations, gas/particle partitioning and particle-size distribution of polybrominated diphenyl ethers (PBDEs) were investigated in two urban areas (Athens and Heraklion) of Greece. Atmospheric (gas + particle) concentrations of ∑PBDE varied from 21 to 30 pg m -3 in the center of Athens and from 4 to 44 pg m -3 in the suburbs of Heraklion. A predominance of particulate PBDEs was observed in Athens (71-76% in particles), whereas the opposite was evident in Heraklion (69-92% in gas phase). In both urban areas, PBDE particle-size distribution featured a distinct enrichment in smaller particles. A similar trend was also observed in aerosols of a background marine site. For all sampling sites, more than 46% of ∑PBDE was associated with particles of <0.57 μm in diameter. Our results imply that particulate PBDEs may have long atmospheric residence time and they may be capable of reaching the deeper parts of the human respiratory system. © 2008 Elsevier Ltd. All rights reserved.

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