Nadal, Martí and Wargent, Jason J. and Jones, Kevin C. and Paul, Nigel D. and Schuhmacher, Marta and Domingo, José L. (2006) Influence of UV-B radiation and temperature on photodegradation of PAHs : preliminary results. Journal of Atmospheric Chemistry, 55 (3). pp. 241-252. ISSN 0167-7764
Full text not available from this repository.Abstract
The joint impact of UV-B radiation and temperature on photodegradation of polycyclic aromatic hydrocarbons (PAHs) sorbed to an organic solvent was assessed in this study. This approach was experimentally performed in a laboratory investigation by means of comparison of two different environments: Atlantic (Lancaster, UK) and Mediterranean (Tarragona, Catalonia, Spain) climatic conditions. The concentration of 10 PAHs contained in a tetradecane solution was compared under two different temperatures (10 and 20°C) and UV-B doses (6.5 and 22.5 kJ m−2 day−1). No photodegradation was observed for the heaviest hydrocarbons (benzo(a)anthracene, chrysene, benzo(a)pyrene, dibenzo(g,h,i)perylene and coronene). In general terms, the half-life of PAHs was highly dependent on their molecular weight. Significant faster photodegradation rates were detected specially for light PAHs. It indicates that a synergistic effect occurred when both temperature and UV-B dose increased. This synergism might have a great implication on the long-range transport of environmental organic pollutants taking into account that low-latitude areas are the hottest and most irradiated of the planet.
| Item Type: | Article |
|---|---|
| Journal or Publication Title: | Journal of Atmospheric Chemistry |
| Uncontrolled Keywords: | polycyclic aromatic hydrocarbons - environmental conditions - photodegradation - tetradecane - UV-B radiation - temperature |
| Subjects: | Q Science > QD Chemistry |
| Departments: | Faculty of Science and Technology > Engineering Faculty of Science and Technology > Lancaster Environment Centre |
| ID Code: | 27044 |
| Deposited By: | Jason Wargent |
| Deposited On: | 15 Sep 2009 09:26 |
| Refereed?: | Yes |
| Published?: | Published |
| Last Modified: | 26 Jul 2012 16:38 |
| Identification Number: | |
| URI: | http://eprints.lancs.ac.uk/id/eprint/27044 |
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