Investigation of sorption of some chlorinated pollutants on soil in oil contaminated systems by static and dynamic methods

Först, C.; Schäfer, Klaus; Andl, A.; Stieglitz, L.

doi:10.1016/0045-6535(94)90382-4

Cited by 4 publications

(2 citation statements)

References 7 publications

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“…Partitioning of HOCs into fresh oils was found to be ap proximately equal to partitioning into octanol ( − ), which suggests that fresh oils could act as additional sorption phases with sorption properties similar to natural organic matter. However, fresh oils were shown to cause so-called “cosolvent effects” (i.e., enhancement of aqueous solubilities of HOCs by water accommodated oil fractions), lowering apparent soil−water distribution coefficients ( , ). In contrast, in soil samples from the field, weathered oil residues did appear to behave as an additional sorption phase ( − ), reducing aqueous concentrations ( , ) and thus lowering bioavail ability and biodegradation ().…”

Section: Introductionmentioning

confidence: 99%

Sorption of Polycyclic Aromatic Hydrocarbons to Oil Contaminated Sediment: Unresolved Complex?

Jonker

Sinke

Brils

et al. 2003

Environ. Sci. Technol.

130

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Oil is ubiquitous in aquatic sediments and may affect partitioning and bioavailability of hydrophobic organic chemicals (HOCs). In contrast to other sedimentary hydrophobic carbon phases (natural organic matter, soot-like materials), oil residues have hardly received any attention as far as it concerns effects on HOC sorption. This paper describes experimental work dealing with such effects of oil on polycyclic aromatic hydrocarbon (PAH) sorption to sediments. Three different oils were spiked to a marine sediment in concentrations between 0 and 100 g/kg. Sediment-water distribution coefficients (Kd) for six deuterated PAHs were then determined either directly after spiking the oil or after a semi-natural weathering process in the lab (lasting for more than 2 yr). Resulting Kd values demonstrated sorption-reducing (competitive) effects at relatively low oil concentrations and sorption-enhancing effects at high oil concentrations. The latter effects only occurred above a certain threshold [i.e., ca. 15% (w/w) of oil on a sedimentary organic carbon basis] marking the oil concentration at which the hydrocarbon mixture presumably starts forming separate phases. Assuming a two-domain (organic carbon + oil) distribution model, oil-water distribution coefficients (K(oil)) for PAHs were estimated. For fresh oils, log K(oil) values appeared to be very similar for different types of oils, proportional to log K(OW) values and indistinguishable from log K(OC) values. For weathered oils, K(oil) values were also rather independent of the type of oil, but the affinity of low molecular weight PAHs for weathered oil residues appeared to be extremely high, even higher than values reported for most types of soot. Because affinities of high molecular weight PAHs for oils had not changed upon weathering, sorption of all PAHs studied (comprising a log K(OW) range of 4.6-6.9) to the weathered oil residues appeared to be more or less constant (averaged log K(oil) = 7.0 +/- 0.24). These results demonstrate that it is crucial to take the presence of oil and its weathering state into account when assessing the actual fate of PAHs in aquatic environments.

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Section: Introductionmentioning

confidence: 99%

Sorption of Polycyclic Aromatic Hydrocarbons to Oil Contaminated Sediment: Unresolved Complex?

Jonker

Sinke

Brils

et al. 2003

Environ. Sci. Technol.

130

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“…Although all of them were capable of adequately describing the equilibrium data, the application varied according to the soil types, environmental conditions (pH, temperature) and amendments (surfactant, oil, etc.) [7,33,[38][39][40]. However, when the PAH in the aqueous phase is degraded or used up by the microorganisms, it was found that the linear model was more suitable to describe this PAH partitioning behavior between the aqueous and sediment phase during biodegradation process [6].…”

Section: Sorption Of Pahs Onto Sedimentmentioning

confidence: 99%

Modeling sorption and biodegradation of phenanthrene in mangrove sediment slurry

Chen

Wong

et al. 2011

Journal of Hazardous Materials

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Sorption of selected polycyclic aromatic hydrocarbons on soils in oil-contaminated systems

Walter¹,

Ederer²,

Först³

et al. 2000

Chemosphere

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Investigation of sorption of some chlorinated pollutants on soil in oil contaminated systems by static and dynamic methods

Cited by 4 publications

References 7 publications

Sorption of Polycyclic Aromatic Hydrocarbons to Oil Contaminated Sediment: Unresolved Complex?

Sorption of Polycyclic Aromatic Hydrocarbons to Oil Contaminated Sediment: Unresolved Complex?

Modeling sorption and biodegradation of phenanthrene in mangrove sediment slurry

Sorption of selected polycyclic aromatic hydrocarbons on soils in oil-contaminated systems

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