Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/4587
Title: Temperature dependence of gas-phase polycyclic aromatic hydrocarbon and organochlorine pesticide concentrations in Chicago air
Authors: Sofuoğlu, Aysun
Odabaşı, Mustafa
Taşdemir, Yücel
Khalili, Nasrin R.
Holsen, Thomas M.
Sofuoğlu, Aysun
Izmir Institute of Technology. Chemical Engineering
Keywords: Air/surface exchange
Organochlorine pesticides
Polycyclic aromatic hydrocarbons
Temperature dependence
Air pollution
Gas phase concentrations
Issue Date: Dec-2001
Publisher: Elsevier Ltd.
Source: Sofuoğlu, A., Odabaşı, M., Taşdemir, Y., Khalili, N. R., and Holsen, T. M. (2001). Temperature dependence of gas-phase polycyclic aromatic hydrocarbon and organochlorine pesticide concentrations in Chicago air. 35(36), 6503-6510. doi:10.1016/S1352-2310(01)00408-3
Abstract: The temperature dependence of gas-phase atmospheric concentrations of polycyclic aromatic hydrocarbons (PAHs) and organochlorine pesticides measured in Chicago, IL between June and October 1995 were investigated using plots of the natural logarithm of partial pressures (lnP) vs. reciprocal mean temperatures (1/T). For the eight lowest molecular weight PAHs, temperature dependence was statistically significant (at the 95% confidence level) and temperature accounted for 23-49% of the variability in gas-phase concentrations. The relatively higher slopes for most of the PAHs suggested that volatilization from local sources and short-range transport influenced their concentrations. For pesticides, temperature dependence was statistically significant for DDD and for trans-nonachlor (at the 95% and 90% confidence levels), and was not statistically significant for the other five compounds (2-18% of the variability in their gas-phase concentrations). The relatively lower slopes for individual pesticides suggested that they have mostly non-urban and distant sources.Results of back trajectory analyses suggested that the region, southwest of Chicago, might be an important local or regional source sector for PAHs and organochlorine pesticides. No statistically significant relationship was observed between wind speed and PAH or pesticide concentrations. None of the variables (temperature, wind speed, wind direction, local and regional sources) could fully explain the variation in their concentrations measured in Chicago, therefore, this variation can be attributed to the combined effect of those factors.
URI: http://doi.org/10.1016/S1352-2310(01)00408-3
http://hdl.handle.net/11147/4587
ISSN: 1352-2310
1352-2310
Appears in Collections:Chemical Engineering / Kimya Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
Sürdürülebilir Yeşil Kampüs Koleksiyonu / Sustainable Green Campus Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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