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Accumulation parameters and seasonal trends for PCBs in temperate and boreal forest plant species.

Nizzetto, Luca and Pastore, Cristina and Liu, Xiang and Camporini, Paolo and Stroppiana, Daniela and Herbert, Ben and Boschetti, Mirco and Zhang, Gan and Brivio, Pietro A. and Jones, Kevin C. and Di Guardo, Antonio (2008) Accumulation parameters and seasonal trends for PCBs in temperate and boreal forest plant species. Environmental Science and Technology, 42 (16). pp. 5911-5916. ISSN 0013-936X

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The concentration of polychlorinated biphenyls (PCBs) in the air and vegetation was measured periodically in two alpine forests, during the growing season. Foliage samples from nine plant species typical of the temperate and boreal environment were collected and analyzed. Leaf concentrations of tri- and tetra-CBs showed fast response times with changing temperature and gas-phase concentrations, suggesting that a partitioning equilibrium is approached relatively rapidly (few days) in the field. Heavier compounds showed kinetically limited accumulation trends, not reaching equilibrium during the growing season. Results were used to estimate the bioconcentration factors or equilibrium plant/air partition coefficient (KPA) for each species. Values of log KPA (calculated on a mass/volume basis) ranged between 0.78 and 1.96 and were correlated to the log KOA. Uptake trends of the higher chlorinated compounds showed intraspecific differences which were partially explained by the specific leaf area (SLA).

Item Type: Journal Article
Journal or Publication Title: Environmental Science and Technology
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Departments: Faculty of Science and Technology > Lancaster Environment Centre
ID Code: 28150
Deposited By: Mr Richard Ingham
Deposited On: 12 Nov 2009 13:37
Refereed?: Yes
Published?: Published
Last Modified: 19 Mar 2018 04:14
Identification Number:

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