globalchange  > 气候变化与战略
DOI: 10.1016/j.atmosenv.2020.117461
论文题名:
Determining sub-cooled liquid vapor pressures and octanol-air partition coefficients for chlorinated and brominated polycyclic aromatic hydrocarbons based on gas chromatographic retention times: Application for gas/particle partitioning in air
作者: Vuong Q.T.; Thang P.Q.; Ohura T.; Choi S.-D.
刊名: Atmospheric Environment
ISSN: 1352-2310
出版年: 2020
卷: 229
语种: 英语
学科: Brominated PAH ; Chlorinated PAH ; Octanol-air ; Partition ; Vapor pressure
中文摘要: Halogenated polycyclic aromatic hydrocarbons (Halo-PAHs) are a new group of PAH derivatives and are reported to be more toxic than their parent PAHs. However, limited research has been undertaken on their physicochemical properties. In this study, sub-cooled liquid vapor pressures (PL) and octanol–air partition coefficients (KOA) of 24 chlorinated and 11 brominated PAHs (ClPAHs and BrPAHs) were determined using the gas chromatographic retention time (GC-RT) technique. The temperature dependences of PL and KOA for the Halo-PAHs were determined by the slopes and intercepts of the linear regressions. The GC-RT method also provided the enthalpies of vaporization (ΔHL) and internal energies of phase transfer (ΔUOA) for all interested compounds. The activity of Halo-PAHs in octanol (γoct) ranging from 18 to 87, indicated the non-ideal solution behavior. The number of the chlorine atoms in the PAH rings could influence the interaction of ClPAHs with the organic matter, whereas this interaction for BrPAHs could not be studied due to the limited number of target BrPAHs. The measured values of PL and KOA were applied to investigate the gas/particle partition behaviors of Halo-PAHs in Ulsan, South Korea. This study is so far the first one to report the linear regression coefficients, which can be used to estimate the PL and KOA values of Halo-PAHs at any temperature. © 2020 Elsevier Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/160368
Appears in Collections:气候变化与战略

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作者单位: School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, South Korea; Faculty of Agriculture, Meijo University, Nagoya, 468-8502, Japan

Recommended Citation:
Vuong Q.T.,Thang P.Q.,Ohura T.,et al. Determining sub-cooled liquid vapor pressures and octanol-air partition coefficients for chlorinated and brominated polycyclic aromatic hydrocarbons based on gas chromatographic retention times: Application for gas/particle partitioning in air[J]. Atmospheric Environment,2020-01-01,229
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