Lancaster EPrints

Further studies of the air-pasture transfer of PCBs.

Thomas, Gareth O. and Smith, K. E. C. and Sweetman, Andrew J. and Jones, Kevin C. (1998) Further studies of the air-pasture transfer of PCBs. Environmental Pollution, 102 (1). pp. 119-128. ISSN 0269-7491

Full text not available from this repository.

Abstract

Field survey and field experimental data are presented and interpreted in the context of the factors controlling the supply of polychlorinated biphenyls (PCBs) to the pasture sward. The field experimental data show that an air (gas phase)–pasture equilibrium was approached rapidly, within a few days, with a similar equilibrium attained between different grass species studied (Lolium perenne, Holcus lanatus, Festuca ovina). A mass balance model for a typical UK air–pasture–soil system is presented and used to estimate the distribution and rates of air–surface exchange and sequestration of PCBs into freshly growing plant biomass. A soil–air–vegetation model developed by Trapp and Matthies (1997, Environmental Science and Technology 31, 71–74) and other information is used to consider the possible influence of soil outgassing and sequestration versus the supply of PCBs from the bulk air to the pasture. It is hypothesised that a rapid approach to air–pasture equilibrium conditions could occur because PCBs are supplied from both the bulk air and by volatilisation from the underlying pastureland soil.

Item Type: Article
Journal or Publication Title: Environmental Pollution
Uncontrolled Keywords: Polychloroniated biphenyls ; Air ; Grass ; Soil ; Volatilisation ; Air-surface exchange
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Departments: Faculty of Science and Technology > Lancaster Environment Centre
ID Code: 21875
Deposited By: ep_ss_importer
Deposited On: 10 Feb 2009 16:12
Refereed?: Yes
Published?: Published
Last Modified: 26 Jul 2012 15:53
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/21875

Actions (login required)

View Item