Rights statement: This is the author’s version of a work that was accepted for publication in Science of the Total Environment. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Science of the Total Environment, 533, 2016 DOI: 10.1016/j.scitotenv.2015.06.084
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Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - The distribution of Polychlorinated Biphenyls (PCBs) in the River Thames Catchment under the scenarios of climate change
AU - Lu, Qiong
AU - Johnson, Andrew C.
AU - Juergens, Monika D.
AU - Sweetman, Andrew
AU - Jin, Li
AU - Whitehead, Paul
N1 - This is the author’s version of a work that was accepted for publication in Science of the Total Environment. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Science of the Total Environment, 533, 2016 DOI: 10.1016/j.scitotenv.2015.06.084
PY - 2015/11/15
Y1 - 2015/11/15
N2 - Measurements have shown low levels of PCBs in water but relatively high concentrations in the resident fish of the River Thames (UK). To better understand the distribution and behaviour of PCBs in the Thames river basin and their potential risks, a level III fugacity model was applied to selected PCB congeners (PCB 52, PCB 118 and PCB 153). The modelling results indicated that fish and sediments represent environmental compartments with the highest PCB concentrations; but the greatest mass of PCBs (over 70%) is likely to remain in the soil. As emissions decline, soil could then act as a significant secondary source of PCBs with the river bed-sediment functioning as a long-term reservoir of PCBs. The predicted changes in temperature and rainfall forecast in the UK Climate Projections 2009 (UKCP09) over the next 80 years had only a modest influence on PCB fate in the model. The most significant result was a tendency for climate change to enhance the evaporation of PCBs from soil to air in the Thames catchment. (C) 2015 Elsevier B.V. All rights reserved.
AB - Measurements have shown low levels of PCBs in water but relatively high concentrations in the resident fish of the River Thames (UK). To better understand the distribution and behaviour of PCBs in the Thames river basin and their potential risks, a level III fugacity model was applied to selected PCB congeners (PCB 52, PCB 118 and PCB 153). The modelling results indicated that fish and sediments represent environmental compartments with the highest PCB concentrations; but the greatest mass of PCBs (over 70%) is likely to remain in the soil. As emissions decline, soil could then act as a significant secondary source of PCBs with the river bed-sediment functioning as a long-term reservoir of PCBs. The predicted changes in temperature and rainfall forecast in the UK Climate Projections 2009 (UKCP09) over the next 80 years had only a modest influence on PCB fate in the model. The most significant result was a tendency for climate change to enhance the evaporation of PCBs from soil to air in the Thames catchment. (C) 2015 Elsevier B.V. All rights reserved.
KW - PCBs
KW - Fugacity
KW - River Thames
KW - Climate change
KW - Fish
KW - PERSISTENT ORGANIC POLLUTANTS
KW - MASS-BALANCE
KW - HYDROCARBONS PAHS
KW - RISK-ASSESSMENT
KW - UK
KW - MODEL
KW - FATE
KW - FUTURE
KW - POPS
KW - FISH
U2 - 10.1016/j.scitotenv.2015.06.084
DO - 10.1016/j.scitotenv.2015.06.084
M3 - Journal article
VL - 533
SP - 187
EP - 195
JO - Science of the Total Environment
JF - Science of the Total Environment
SN - 0048-9697
ER -