Journal of Atmospheric Chemistry

, Volume 55, Issue 3, pp 241–252

Influence of UV-B Radiation and Temperature on Photodegradation of PAHs: Preliminary Results

  • Martí Nadal
  • Jason J. Wargent
  • Kevin C. Jones
  • Nigel D. Paul
  • Marta Schuhmacher
  • José L. Domingo
Article

DOI: 10.1007/s10874-006-9037-7

Cite this article as:
Nadal, M., Wargent, J.J., Jones, K.C. et al. J Atmos Chem (2006) 55: 241. doi:10.1007/s10874-006-9037-7

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.

Key words

polycyclic aromatic hydrocarbonsenvironmental conditionsphotodegradationtetradecaneUV-B radiationtemperature

Copyright information

© Springer Science + Business Media B.V. 2006

Authors and Affiliations

  • Martí Nadal
    • 1
  • Jason J. Wargent
    • 2
  • Kevin C. Jones
    • 3
  • Nigel D. Paul
    • 2
  • Marta Schuhmacher
    • 1
  • José L. Domingo
    • 1
  1. 1.Laboratory of Toxicology and Environmental Health, School of Medicine“Rovira i Virgili” UniversityReusSpain
  2. 2.Department of Biological Sciences, IENSLancaster UniversityLancasterUK
  3. 3.Department of Environmental Science, IENSLancaster UniversityLancasterUK