What question did this study set out to answer?

To evaluate how dissolved humic acids influence the desorption rates and mass transfer of polychlorinated biphenyls and polybrominated diphenyl ethers from a solid polymer phase into water.

February 2, 2009Environmental Science & TechnologyOpen Access

Facilitated Transport of Polychlorinated Biphenyls and Polybrominated Diphenyl Ethers by Dissolved Organic Matter

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Authors

TLThomas L. ter LaakInstitute for Biodiversity JEJ.C.H. van EijkerenScientific Computing & Modelling (Netherlands)FBF BusserUtrecht University

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Implication

Laboratory experiment demonstrates enhanced desorption of PCBs and PBDEs in aqueous solutions with humic acids, indicating altered uptake dynamics for environmental passive samplers.

Key Points

To evaluate how dissolved humic acids influence the desorption rates and mass transfer of polychlorinated biphenyls and polybrominated diphenyl ethers from a solid polymer phase into water.
Monitored the desorption kinetics of polychlorinated biphenyls (PCBs) and polybrominated diphenyl ethers (PBDEs) from a polymer sorbent into aqueous media.
Measured chemical release rates across varying concentrations of dissolved humic acid reflecting environmentally realistic ranges.
Target chemicals sorbed to dissolved humic acid contributed significantly to overall mass transfer when chemical affinity for the humic acid phase was sufficiently high.
Environmentally relevant concentrations of humic acid systematically accelerated the release and aqueous transport of hydrophobic organic chemicals away from sorbents.

Cite This Study

Laak et al. (2009) studied this question.

synapsesocial.com/papers/6a830f94c7533dfc47b37ab2 https://doi.org/10.1021/es802403v

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Implication

Laboratory experiment demonstrates enhanced desorption of PCBs and PBDEs in aqueous solutions with humic acids, indicating altered uptake dynamics for environmental passive samplers.

Facilitated Transport of Polychlorinated Biphenyls and Polybrominated Diphenyl Ethers by Dissolved Organic Matter

Discussion

Member takes

Implication

Key Points

Cite This Study

Facilitated Transport of Polychlorinated Biphenyls and Polybrominated Diphenyl Ethers by Dissolved Organic Matter

Discussion

Member takes

Implication

Key Points

Cite This Study

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