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PCB in soils and estimated soil-air exchange fluxes of selected PCB congeners in the south of Sweden

Backe, Cecilia LU ; Cousins, IT and Larsson, Per LU (2004) In Environmental Pollution 128(1-2). p.59-72
Abstract
PCB concentrations were studied in different soils to determine the spatial variation over a region of approximately 11000 km(2). PCB congener pattern was used to illustrate the spatial differences, as shown by principal component analysis (PCA). The relationship to different soil parameters was studied. PCB concentrations in soil showed a large variation between sampling-areas with median concentrations ranging between 2.3 and 332 ng g(-1) (dw). Highest concentrations were found at two sites with sandy soils, one with extremely high organic carbon content. Both sites were located on the west coast of southern Sweden. Soils with similar soil textures (i.e. sandy silt moraine) did not show any significant differences in PCB concentrations.... (More)
PCB concentrations were studied in different soils to determine the spatial variation over a region of approximately 11000 km(2). PCB congener pattern was used to illustrate the spatial differences, as shown by principal component analysis (PCA). The relationship to different soil parameters was studied. PCB concentrations in soil showed a large variation between sampling-areas with median concentrations ranging between 2.3 and 332 ng g(-1) (dw). Highest concentrations were found at two sites with sandy soils, one with extremely high organic carbon content. Both sites were located on the west coast of southern Sweden. Soils with similar soil textures (i.e. sandy silt moraine) did not show any significant differences in PCB concentrations. PCB congener composition was shown to differ between sites, with congener patterns almost site-specific. PCB in air and precipitation was measured and the transfer of chemicals between the soil and air compartments was estimated. Soil-air fugacity quotient calculations showed that the PCBs in the soil consistently had a higher fugacity than the PCBs in the air, with a median quotient value of 2.7. The gaseous fluxes between soil and air were estimated using standard modelling equations and a net soil-air flux estimated by subtracting bulk deposition from gaseous soil-air fluxes. It was shown that inclusion of vertical sorbed phase transport of PCBs in the soil had a large effect on the direction of the net soil-air exchange fluxes. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Environmental Pollution
volume
128
issue
1-2
pages
59 - 72
publisher
Elsevier
external identifiers
  • wos:000189127500006
  • pmid:14667720
  • scopus:0345118929
ISSN
0269-7491
DOI
10.1016/j.envpol.2003.08.038
language
English
LU publication?
yes
id
a46f1a3e-173e-409e-aeb1-f88b8808aad9 (old id 135876)
date added to LUP
2007-06-27 07:47:38
date last changed
2017-07-23 04:44:35
@article{a46f1a3e-173e-409e-aeb1-f88b8808aad9,
  abstract     = {PCB concentrations were studied in different soils to determine the spatial variation over a region of approximately 11000 km(2). PCB congener pattern was used to illustrate the spatial differences, as shown by principal component analysis (PCA). The relationship to different soil parameters was studied. PCB concentrations in soil showed a large variation between sampling-areas with median concentrations ranging between 2.3 and 332 ng g(-1) (dw). Highest concentrations were found at two sites with sandy soils, one with extremely high organic carbon content. Both sites were located on the west coast of southern Sweden. Soils with similar soil textures (i.e. sandy silt moraine) did not show any significant differences in PCB concentrations. PCB congener composition was shown to differ between sites, with congener patterns almost site-specific. PCB in air and precipitation was measured and the transfer of chemicals between the soil and air compartments was estimated. Soil-air fugacity quotient calculations showed that the PCBs in the soil consistently had a higher fugacity than the PCBs in the air, with a median quotient value of 2.7. The gaseous fluxes between soil and air were estimated using standard modelling equations and a net soil-air flux estimated by subtracting bulk deposition from gaseous soil-air fluxes. It was shown that inclusion of vertical sorbed phase transport of PCBs in the soil had a large effect on the direction of the net soil-air exchange fluxes.},
  author       = {Backe, Cecilia and Cousins, IT and Larsson, Per},
  issn         = {0269-7491},
  language     = {eng},
  number       = {1-2},
  pages        = {59--72},
  publisher    = {Elsevier},
  series       = {Environmental Pollution},
  title        = {PCB in soils and estimated soil-air exchange fluxes of selected PCB congeners in the south of Sweden},
  url          = {http://dx.doi.org/10.1016/j.envpol.2003.08.038},
  volume       = {128},
  year         = {2004},
}