Estimation of In Situ Sediment-to-Water Fluxes of Polycyclic Aromatic Hydrocarbons, Polychlorobiphenyls and Polybrominated Diphenylethers

A.A. Koelmans, A. Poot, H.J. de Lange, I. Velzeboer, J. Harmsen, P.C.M. van Noort

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

Sediment--water fluxes of hydrophobic organic chemicals (HOC) may affect the quality of surface waters. Here, we present an approach to derive such fluxes from (a) in situ HOC concentration gradients measured with passive samplers and (b) mass transfer coefficients measured with a novel flux method using Empore disks. For eight undisturbed sediments, this method identified whether the sediment acted as a source or as a sink for HOCs. The analysis also identified which type of transport resistance governed sediment water exchange. For seven inland locations, exchange was limited by benthic boundary layer transport, showing no dependencies on sediment or chemical properties other than concentration. For one river mouth location, exchange was limited by slow in-bed intraparticle diffusion. A biphasic dual compartment radial diffusion model adequately described the data for this location. Fast desorption was interpreted as molecular diffusion retarded by microscale dual domain sorption to amorphous as well as black carbon (BC). Slow desorption was invariant with LogKow and consistent with intraorganic matter diffusion through BC particles. Finally, it is discussed how these findings can be translated into a general framework for flux based exposure assessment.
Original languageEnglish
Pages (from-to)3014-3020
JournalEnvironmental Science and Technology
Volume44
Issue number8
DOIs
Publication statusPublished - 2010

Fingerprint

Polycyclic Aromatic Hydrocarbons
PBDE
PAH
Sediments
Fluxes
Water
Organic Chemicals
Soot
black carbon
sediment
desorption
Desorption
radial diffusion
water
sediment property
benthic boundary layer
water exchange
sampler
chemical property
mass transfer

Keywords

  • hydrophobic organic-compounds
  • contaminated sediments
  • black carbon
  • hudson river
  • polychlorinated-biphenyls
  • desorption
  • sorption
  • release
  • model
  • soot

Cite this

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title = "Estimation of In Situ Sediment-to-Water Fluxes of Polycyclic Aromatic Hydrocarbons, Polychlorobiphenyls and Polybrominated Diphenylethers",
abstract = "Sediment--water fluxes of hydrophobic organic chemicals (HOC) may affect the quality of surface waters. Here, we present an approach to derive such fluxes from (a) in situ HOC concentration gradients measured with passive samplers and (b) mass transfer coefficients measured with a novel flux method using Empore disks. For eight undisturbed sediments, this method identified whether the sediment acted as a source or as a sink for HOCs. The analysis also identified which type of transport resistance governed sediment water exchange. For seven inland locations, exchange was limited by benthic boundary layer transport, showing no dependencies on sediment or chemical properties other than concentration. For one river mouth location, exchange was limited by slow in-bed intraparticle diffusion. A biphasic dual compartment radial diffusion model adequately described the data for this location. Fast desorption was interpreted as molecular diffusion retarded by microscale dual domain sorption to amorphous as well as black carbon (BC). Slow desorption was invariant with LogKow and consistent with intraorganic matter diffusion through BC particles. Finally, it is discussed how these findings can be translated into a general framework for flux based exposure assessment.",
keywords = "hydrophobic organic-compounds, contaminated sediments, black carbon, hudson river, polychlorinated-biphenyls, desorption, sorption, release, model, soot",
author = "A.A. Koelmans and A. Poot and {de Lange}, H.J. and I. Velzeboer and J. Harmsen and {van Noort}, P.C.M.",
year = "2010",
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pages = "3014--3020",
journal = "Environmental Science and Technology",
issn = "0013-936X",
publisher = "American Chemical Society",
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}

Estimation of In Situ Sediment-to-Water Fluxes of Polycyclic Aromatic Hydrocarbons, Polychlorobiphenyls and Polybrominated Diphenylethers. / Koelmans, A.A.; Poot, A.; de Lange, H.J.; Velzeboer, I.; Harmsen, J.; van Noort, P.C.M.

In: Environmental Science and Technology, Vol. 44, No. 8, 2010, p. 3014-3020.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Estimation of In Situ Sediment-to-Water Fluxes of Polycyclic Aromatic Hydrocarbons, Polychlorobiphenyls and Polybrominated Diphenylethers

AU - Koelmans, A.A.

AU - Poot, A.

AU - de Lange, H.J.

AU - Velzeboer, I.

AU - Harmsen, J.

AU - van Noort, P.C.M.

PY - 2010

Y1 - 2010

N2 - Sediment--water fluxes of hydrophobic organic chemicals (HOC) may affect the quality of surface waters. Here, we present an approach to derive such fluxes from (a) in situ HOC concentration gradients measured with passive samplers and (b) mass transfer coefficients measured with a novel flux method using Empore disks. For eight undisturbed sediments, this method identified whether the sediment acted as a source or as a sink for HOCs. The analysis also identified which type of transport resistance governed sediment water exchange. For seven inland locations, exchange was limited by benthic boundary layer transport, showing no dependencies on sediment or chemical properties other than concentration. For one river mouth location, exchange was limited by slow in-bed intraparticle diffusion. A biphasic dual compartment radial diffusion model adequately described the data for this location. Fast desorption was interpreted as molecular diffusion retarded by microscale dual domain sorption to amorphous as well as black carbon (BC). Slow desorption was invariant with LogKow and consistent with intraorganic matter diffusion through BC particles. Finally, it is discussed how these findings can be translated into a general framework for flux based exposure assessment.

AB - Sediment--water fluxes of hydrophobic organic chemicals (HOC) may affect the quality of surface waters. Here, we present an approach to derive such fluxes from (a) in situ HOC concentration gradients measured with passive samplers and (b) mass transfer coefficients measured with a novel flux method using Empore disks. For eight undisturbed sediments, this method identified whether the sediment acted as a source or as a sink for HOCs. The analysis also identified which type of transport resistance governed sediment water exchange. For seven inland locations, exchange was limited by benthic boundary layer transport, showing no dependencies on sediment or chemical properties other than concentration. For one river mouth location, exchange was limited by slow in-bed intraparticle diffusion. A biphasic dual compartment radial diffusion model adequately described the data for this location. Fast desorption was interpreted as molecular diffusion retarded by microscale dual domain sorption to amorphous as well as black carbon (BC). Slow desorption was invariant with LogKow and consistent with intraorganic matter diffusion through BC particles. Finally, it is discussed how these findings can be translated into a general framework for flux based exposure assessment.

KW - hydrophobic organic-compounds

KW - contaminated sediments

KW - black carbon

KW - hudson river

KW - polychlorinated-biphenyls

KW - desorption

KW - sorption

KW - release

KW - model

KW - soot

U2 - 10.1021/es903938z

DO - 10.1021/es903938z

M3 - Article

VL - 44

SP - 3014

EP - 3020

JO - Environmental Science and Technology

JF - Environmental Science and Technology

SN - 0013-936X

IS - 8

ER -