Modelling the fate of hydrophobic organic contaminants in a boreal forest catchment: A cross disciplinary approach to assessing diffuse pollution to surface waters

Lancaster Environment Centre

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https://doi.org/10.1016/j.envpol.2010.05.027
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Keywords

Dioxin, PCB , HOCs , Diffuse pollution , Catchment , Model

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Modelling the fate of hydrophobic organic contaminants in a boreal forest catchment: A cross disciplinary approach to assessing diffuse pollution to surface waters. / Bergknut, Magnus; Meijer, Sandra ; Halsall, Crispin et al.
In: Environmental Pollution, Vol. 158, No. 9, 09.2010, p. 2964-2969.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Bibtex

@article{95dd5ee6841b45f8a4503664e72d442a,

title = "Modelling the fate of hydrophobic organic contaminants in a boreal forest catchment: A cross disciplinary approach to assessing diffuse pollution to surface waters",

abstract = "The fate of hydrophobic organic compounds (HOCs) in soils and waters in a northern boreal catchment was explored through the development of a chemical fate model in a well-characterised catchment system dominated by two land types: forest and mire. Input was based solely on atmospheric deposition, dominated by accumulation in the winter snowpack. Release from soils was governed by the HOC concentration in soil, the soil organic carbon fraction and soil-water DOC content. The modelled export of selected HOCs in surface waters ranged between 11 and 250 ng day(-1) during the snow covered period, compared to 200 and 9600 ng/d during snow-melt; highlighting the importance of the snow pack as a source of these chemicals. The predicted levels of HOCs in surface water were in reasonable agreement to a limited set of measured values, although the model tended to over predict concentrations of HOCs for the forested sub-catchment, by over an order of magnitude in the case of hexachlorobenzene and PCB 180. This possibly reflects both the heterogeneity of the forest soils and the complicated and changing hydrology experienced between the different seasons. ",

keywords = "Dioxin, PCB , HOCs , Diffuse pollution , Catchment , Model",

author = "Magnus Bergknut and Sandra Meijer and Crispin Halsall and Anneli Agren and Hjalmar Laudon and Stephan Koehler and Jones, {Kevin C.} and Mats Tysklind and Karin Wiberg",

year = "2010",

month = sep,

doi = "10.1016/j.envpol.2010.05.027",

language = "English",

volume = "158",

pages = "2964--2969",

journal = "Environmental Pollution",

issn = "0269-7491",

publisher = "Elsevier Ltd",

number = "9",

}

RIS

TY - JOUR

T1 - Modelling the fate of hydrophobic organic contaminants in a boreal forest catchment: A cross disciplinary approach to assessing diffuse pollution to surface waters

AU - Bergknut, Magnus

AU - Meijer, Sandra

AU - Halsall, Crispin

AU - Agren, Anneli

AU - Laudon, Hjalmar

AU - Koehler, Stephan

AU - Jones, Kevin C.

AU - Tysklind, Mats

AU - Wiberg, Karin

PY - 2010/9

Y1 - 2010/9

N2 - The fate of hydrophobic organic compounds (HOCs) in soils and waters in a northern boreal catchment was explored through the development of a chemical fate model in a well-characterised catchment system dominated by two land types: forest and mire. Input was based solely on atmospheric deposition, dominated by accumulation in the winter snowpack. Release from soils was governed by the HOC concentration in soil, the soil organic carbon fraction and soil-water DOC content. The modelled export of selected HOCs in surface waters ranged between 11 and 250 ng day(-1) during the snow covered period, compared to 200 and 9600 ng/d during snow-melt; highlighting the importance of the snow pack as a source of these chemicals. The predicted levels of HOCs in surface water were in reasonable agreement to a limited set of measured values, although the model tended to over predict concentrations of HOCs for the forested sub-catchment, by over an order of magnitude in the case of hexachlorobenzene and PCB 180. This possibly reflects both the heterogeneity of the forest soils and the complicated and changing hydrology experienced between the different seasons.

AB - The fate of hydrophobic organic compounds (HOCs) in soils and waters in a northern boreal catchment was explored through the development of a chemical fate model in a well-characterised catchment system dominated by two land types: forest and mire. Input was based solely on atmospheric deposition, dominated by accumulation in the winter snowpack. Release from soils was governed by the HOC concentration in soil, the soil organic carbon fraction and soil-water DOC content. The modelled export of selected HOCs in surface waters ranged between 11 and 250 ng day(-1) during the snow covered period, compared to 200 and 9600 ng/d during snow-melt; highlighting the importance of the snow pack as a source of these chemicals. The predicted levels of HOCs in surface water were in reasonable agreement to a limited set of measured values, although the model tended to over predict concentrations of HOCs for the forested sub-catchment, by over an order of magnitude in the case of hexachlorobenzene and PCB 180. This possibly reflects both the heterogeneity of the forest soils and the complicated and changing hydrology experienced between the different seasons.

KW - Dioxin

KW - PCB

KW - HOCs

KW - Diffuse pollution

KW - Catchment

KW - Model

U2 - 10.1016/j.envpol.2010.05.027

DO - 10.1016/j.envpol.2010.05.027

M3 - Journal article

VL - 158

SP - 2964

EP - 2969

JO - Environmental Pollution

JF - Environmental Pollution

SN - 0269-7491

IS - 9

ER -

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