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Contaminated sediment as a source of PCBs in a river system

Larsson, Per LU ; Okla, Lennart LU ; Ryding, S.-O. and Westöö, B. (1990) In Canadian Journal of Fisheries and Aquatic Sciences 47(4). p.746-754
Abstract
The transport of PCBs (Aroclor 1242) in a river system in southern Sweden was governed by outflow from sediment in a 26-ha contaminated lake. Experiments in the lake revealed that 14 g PCBs/d escaped from the sediment, while sedimentation was 3 g PCB/d. Volatilization of PCBs from the lake surface was 0.02 g/d, which was considerably higher than the atmospheric fallout . The majority of the sediment-desorbed compounds (80%) remained at the river mouth, 60 km downstream, and entered the Baltic Sea. Desorption increased the ratio of tetrachlorobiphenyls to pentachlorobiphenyls in the water. Transport across the water/air interface was higher for trichlorobiphenyls, while atmospheric deposition was dominated by penta- and hexachlorobiphenyls.... (More)
The transport of PCBs (Aroclor 1242) in a river system in southern Sweden was governed by outflow from sediment in a 26-ha contaminated lake. Experiments in the lake revealed that 14 g PCBs/d escaped from the sediment, while sedimentation was 3 g PCB/d. Volatilization of PCBs from the lake surface was 0.02 g/d, which was considerably higher than the atmospheric fallout . The majority of the sediment-desorbed compounds (80%) remained at the river mouth, 60 km downstream, and entered the Baltic Sea. Desorption increased the ratio of tetrachlorobiphenyls to pentachlorobiphenyls in the water. Transport across the water/air interface was higher for trichlorobiphenyls, while atmospheric deposition was dominated by penta- and hexachlorobiphenyls. Therefore, the sediment of the lake acted as a source of PCBs entering the river system as well as the atmosphere. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Canadian Journal of Fisheries and Aquatic Sciences
volume
47
issue
4
pages
746 - 754
publisher
National Research Council Canada
external identifiers
  • scopus:0025232043
ISSN
1205-7533
DOI
10.1139/f90-085
language
English
LU publication?
yes
id
b2754c5d-4433-48d0-8019-86bcf6fb9c9d (old id 8164223)
date added to LUP
2015-11-04 14:37:34
date last changed
2017-07-30 03:44:41
@article{b2754c5d-4433-48d0-8019-86bcf6fb9c9d,
  abstract     = {The transport of PCBs (Aroclor 1242) in a river system in southern Sweden was governed by outflow from sediment in a 26-ha contaminated lake. Experiments in the lake revealed that 14 g PCBs/d escaped from the sediment, while sedimentation was 3 g PCB/d. Volatilization of PCBs from the lake surface was 0.02 g/d, which was considerably higher than the atmospheric fallout . The majority of the sediment-desorbed compounds (80%) remained at the river mouth, 60 km downstream, and entered the Baltic Sea. Desorption increased the ratio of tetrachlorobiphenyls to pentachlorobiphenyls in the water. Transport across the water/air interface was higher for trichlorobiphenyls, while atmospheric deposition was dominated by penta- and hexachlorobiphenyls. Therefore, the sediment of the lake acted as a source of PCBs entering the river system as well as the atmosphere.},
  author       = {Larsson, Per and Okla, Lennart and Ryding, S.-O. and Westöö, B.},
  issn         = {1205-7533},
  language     = {eng},
  number       = {4},
  pages        = {746--754},
  publisher    = {National Research Council Canada},
  series       = {Canadian Journal of Fisheries and Aquatic Sciences},
  title        = {Contaminated sediment as a source of PCBs in a river system},
  url          = {http://dx.doi.org/10.1139/f90-085},
  volume       = {47},
  year         = {1990},
}