| Title: | Accumulation of persistent organic pollutants in canopies of different forest types: role of species composition and altitudinal-temperature gradient |
| Author(s): | Nizzetto L; Jones KC; Gramatica P; Papa E; Cerabolini B; Di Guardo A; |
| Address: | "Department of Structural and Functional Biology, University of Insubria, Via ]. H. Dunant 3, 21100 Varese VA, Italy" |
| ISSN/ISBN: | 0013-936X (Print) 0013-936X (Linking) |
| Abstract: | "Leaves from the dominant tree species in three different alpine forests were sampled along an altitudinal gradient and analyzed for HCB, alpha- and gamma-HCH, and PCBs. The mean canopy concentration was calculated, considering the relative abundance of each species in the respective forest. Compound fractionation occurred in the vegetation along the altitudinal/temperature gradient. Results were compared with air concentrations and in-field plant/air partition coefficients (K(PA)) were calculated for each species; this showed differences between broadleaves and needles. The mean canopy/air partition coefficient (K(CA)) was also calculated by averaging results from single species. The variability of persistent organic pollutants distribution in canopies is discussed considering two main factors, the altitudinal/temperature gradient and the species composition. The latter is responsible for most of the concentration variability of the more volatile compounds. A model to calculate dry gaseous deposition to different forest canopies is presented" |
| Keywords: | "Air Pollutants Altitude Ecosystem *Environment Environmental Monitoring/*methods Geography Kinetics Models, Statistical Organic Chemicals/*analysis/toxicity Plant Leaves/metabolism Soil Pollutants Temperature *Trees;" |
| Notes: | "MedlineNizzetto, Luca Jones, Kevin C Gramatica, Paola Papa, Ester Cerabolini, Bruno Di Guardo, Antonio eng Research Support, Non-U.S. Gov't 2006/12/06 Environ Sci Technol. 2006 Nov 1; 40(21):6580-6. doi: 10.1021/es0605523" |
