Atmospheric Aerosols - Regional Characteristics - Chemistry and Physics 2012
DOI: 10.5772/48432
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Temporal Variation of Particle Size Distribution of Polycyclic Aromatic Hydrocarbons at Different Roadside Air Environments in Bangkok, Thailand

Abstract: , Thailand 31 cool (November -February). In terms of their characteristics, the hot season is hot and dry, the wet season is hot and wet, and the cool season is cool and dry. Field measurements were conducted in March and April, 2006, in the hot season. Concentrations of particulate phase P A H s w e r e m e a s u r e d o n t h e r o a d s i d e i n B a n g k o k . D i u r n a l v a r i a t i o n s o f P A H concentrations were investigated by comparing two roadside sites with different road configurations. Th… Show more

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“…The authors showed that PAHs were adsorbed on the particles that had the bimodal distribution by sizes with the maxima in the ranges of 0.4 2.1 mm and 3.39.0 mm. In the work [21], when studying the atmospheric air contamination near the highway it was shown that the distribution of PAHs on dust particles of a certain size depended on the molecular mass of PAH. The authors explain this dependence by the Kelvin effect that binds the particles diameter and vapour pressure of the substance, at which more volatile PAHs with a smaller molecular mass are bound with particles of a larger size.…”
mentioning
confidence: 99%
“…The authors showed that PAHs were adsorbed on the particles that had the bimodal distribution by sizes with the maxima in the ranges of 0.4 2.1 mm and 3.39.0 mm. In the work [21], when studying the atmospheric air contamination near the highway it was shown that the distribution of PAHs on dust particles of a certain size depended on the molecular mass of PAH. The authors explain this dependence by the Kelvin effect that binds the particles diameter and vapour pressure of the substance, at which more volatile PAHs with a smaller molecular mass are bound with particles of a larger size.…”
mentioning
confidence: 99%