Seasonal and particle size-dependent variations in gas/particle partitioning of PCDD/Fs
SCIE
SCOPUS
- Title
- Seasonal and particle size-dependent variations in gas/particle partitioning of PCDD/Fs
- Authors
- Lee, SJ; Ale, D; Chang, YS; Oh, JE; Shin, SK
- Date Issued
- 2008-05
- Publisher
- ELSEVIER SCI LTD
- Abstract
- This study monitored particle size-dependent variations in atmospheric polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs). Two gas/particle partitioning models, the subcooled liquid vapor pressure (P-L(0)) and the octanol-air partition coefficient (KOA) model, were applied to each particle sizes. The regression coefficients of each fraction against the gas/particle partition coefficient (K-P) were similar for separated particles within the same sample set but differed for particles collected during different periods. Gas/particle partitioning calculated from the integral of fractions was similar to that of size-segregated particles and previously measured bulk values. Despite the different behaviors and production mechanisms of atmospheric particles of different sizes, PCDD/F partitioning of each size range was controlled by meteorological conditions such as atmospheric temperature, O-3 and UV, which reflects no Source related with certain particle size ranges but mixed urban Sources within this city. Out-observations emphasize that when assessing environmental and health effects, the movement of PCDD/Fs in air should be considered in conjunction with particle size in addition to the bulk aerosol. (c) 2007 Elsevier Ltd. All rights reserved.
- Keywords
- PCDD/Fs; particle size; season; gas/particle partitioning; POLYCYCLIC AROMATIC-HYDROCARBONS; DIBENZO-P-DIOXINS; ORGANIC-COMPOUNDS; PARTICULATE MATTER; URBAN AIR; AIRBORNE PARTICLES; ABSORPTION-MODEL; DRY DEPOSITION; GAS; PAHS
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/22763
- DOI
- 10.1016/j.envpol.2007.07.026
- ISSN
- 0269-7491
- Article Type
- Article
- Citation
- ENVIRONMENTAL POLLUTION, vol. 153, no. 1, page. 215 - 222, 2008-05
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