Modelling the fate of micropollutants in the marine environment using passive sampling

Michiel Claessens, Frederik De Laender, Els Monteyne, Patrick Roose, Colin R. Janssen

Résultats de recherche: Contribution à un journal/une revueArticle

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Résumé

Polydimethylsiloxane sheets were used to determine freely dissolved concentrations (C<inf>diss</inf>) of polycyclic aromatic hydrocarbons (PAHs) and polychlorinated biphenyls (PCBs) in the Belgian coastal zone. Equilibrium models were used to predict the whole water concentrations (C<inf>ww</inf>) of these compounds as well as their concentrations in sediment, suspended particulate matter (SPM) and biota. In general, contaminant concentrations were predicted well for whole water and biota. C<inf>ww</inf> was increasingly underpredicted as K<inf>oc</inf> increased, possibly because of the presence of black carbon. Concentrations in biota were overestimated by the equilibrium approach when logK<inf>ow</inf> exceeded 6.5, suggesting an increasing role of transformation processes. Concentrations of PAHs and PCBs in sediment and SPM were consistently underpredicted although a good correlation between measured and predicted values was observed. This was potentially due to the use of experimental K<inf>oc</inf> values which have been found to underestimate partitioning of hydrophobic substances to sediment in field studies.

langue originaleAnglais
Pages (de - à)103-109
Nombre de pages7
journalMarine Pollution Bulletin
Volume96
Numéro de publication1-2
Les DOIs
étatPublié - 15 juil. 2015

Empreinte digitale

marine environment
biota
polychlorinated biphenyls
suspended particulate matter
polycyclic aromatic hydrocarbons
Polycyclic aromatic hydrocarbons
Sampling
Polychlorinated biphenyls
PCB
organisms
PAH
Sediments
particulates
sampling
sediment
modeling
sediments
Suspended sediments
Polydimethylsiloxane
black carbon

Citer ceci

Claessens, Michiel ; De Laender, Frederik ; Monteyne, Els ; Roose, Patrick ; Janssen, Colin R. / Modelling the fate of micropollutants in the marine environment using passive sampling. Dans: Marine Pollution Bulletin. 2015 ; Vol 96, Numéro 1-2. p. 103-109.
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abstract = "Polydimethylsiloxane sheets were used to determine freely dissolved concentrations (Cdiss) of polycyclic aromatic hydrocarbons (PAHs) and polychlorinated biphenyls (PCBs) in the Belgian coastal zone. Equilibrium models were used to predict the whole water concentrations (Cww) of these compounds as well as their concentrations in sediment, suspended particulate matter (SPM) and biota. In general, contaminant concentrations were predicted well for whole water and biota. Cww was increasingly underpredicted as Koc increased, possibly because of the presence of black carbon. Concentrations in biota were overestimated by the equilibrium approach when logKow exceeded 6.5, suggesting an increasing role of transformation processes. Concentrations of PAHs and PCBs in sediment and SPM were consistently underpredicted although a good correlation between measured and predicted values was observed. This was potentially due to the use of experimental Koc values which have been found to underestimate partitioning of hydrophobic substances to sediment in field studies.",
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Modelling the fate of micropollutants in the marine environment using passive sampling. / Claessens, Michiel; De Laender, Frederik; Monteyne, Els; Roose, Patrick; Janssen, Colin R.

Dans: Marine Pollution Bulletin, Vol 96, Numéro 1-2, 15.07.2015, p. 103-109.

Résultats de recherche: Contribution à un journal/une revueArticle

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T1 - Modelling the fate of micropollutants in the marine environment using passive sampling

AU - Claessens, Michiel

AU - De Laender, Frederik

AU - Monteyne, Els

AU - Roose, Patrick

AU - Janssen, Colin R.

PY - 2015/7/15

Y1 - 2015/7/15

N2 - Polydimethylsiloxane sheets were used to determine freely dissolved concentrations (Cdiss) of polycyclic aromatic hydrocarbons (PAHs) and polychlorinated biphenyls (PCBs) in the Belgian coastal zone. Equilibrium models were used to predict the whole water concentrations (Cww) of these compounds as well as their concentrations in sediment, suspended particulate matter (SPM) and biota. In general, contaminant concentrations were predicted well for whole water and biota. Cww was increasingly underpredicted as Koc increased, possibly because of the presence of black carbon. Concentrations in biota were overestimated by the equilibrium approach when logKow exceeded 6.5, suggesting an increasing role of transformation processes. Concentrations of PAHs and PCBs in sediment and SPM were consistently underpredicted although a good correlation between measured and predicted values was observed. This was potentially due to the use of experimental Koc values which have been found to underestimate partitioning of hydrophobic substances to sediment in field studies.

AB - Polydimethylsiloxane sheets were used to determine freely dissolved concentrations (Cdiss) of polycyclic aromatic hydrocarbons (PAHs) and polychlorinated biphenyls (PCBs) in the Belgian coastal zone. Equilibrium models were used to predict the whole water concentrations (Cww) of these compounds as well as their concentrations in sediment, suspended particulate matter (SPM) and biota. In general, contaminant concentrations were predicted well for whole water and biota. Cww was increasingly underpredicted as Koc increased, possibly because of the presence of black carbon. Concentrations in biota were overestimated by the equilibrium approach when logKow exceeded 6.5, suggesting an increasing role of transformation processes. Concentrations of PAHs and PCBs in sediment and SPM were consistently underpredicted although a good correlation between measured and predicted values was observed. This was potentially due to the use of experimental Koc values which have been found to underestimate partitioning of hydrophobic substances to sediment in field studies.

KW - Environmental fate

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