Generator column determination of octanol/water partition coefficients for selected polychlorinated biphenyl congeners

Woodburn, Kent B.; Doucette, William J.; Andrén, Anders

doi:10.1021/es00124a012

Cited by 115 publications

(55 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The results of six studies using a wide range of experimental techniques is given in Table 1-3 and are plotted along with correlations based on sediment organic matter sorption in Figure 1-3. It Mackay et al (1980b), 2) Bruggeman et al (1982), 3) Rapaport and Eisenreich (1984), 4) Woodburn et al (1984), 5) Chiou et al (1977), 6) Chiou et al (1983), 7) Miller et al (1985), 8) from Gabarini and Lion (1985), 9) Karickhoff et al (1979), 10) Chiou et al (1982), 11) Chiou (1985), 12) from Carter and Suffet (1983), 13) from Landrum et al (1984). This would suggest that the mechanisms involved in the two processes are probably very similar.…”

Section: Sorption Of Hoc With Colloidal Organic Mattermentioning

confidence: 98%

“…It is not known whether the dependence of log K,, on log Kow can be expected to remain linear at bThe reported error is one std. deviation for n > 3 b-References are the following: 1) Rapaport and Eisenreich (1984), 2) Woodburn et al (1984), 3) Bruggeman et al (1982), 4) Chiou et al (1977), 5) Chiou et al (1983), 6) Karickhoff et al (1979), 7) Chiou et al (1985), 8) Miller et al (1985). CValue of reference 1) rejected for being > 4 a from the mean dKocs reported on 2 different sediments.…”

Section: The Constancy Of Kocmentioning

confidence: 99%

“…deviation when n > 3. Numbered references for log Kow's refer to: 1) Mackay et al(1980b), 2) Bruggeman et al (1982), 3) Rapaport and Eisenreich (1984), 4) Woodburn et al (1984), 5) Chiou et al (1977), 6) Chiou et al (1983), 7) Miller et al (1985), 8) Karickhoff et al (1979), 9) McDuffie (1980), 10) Chiou et al (1982), 11) from Carter and Suffet (1983), 12) from Karickhoff (1981), 13) from Landrum et al (1984) Kow alone is a poor predictor of HOC/organic colloid sorption. As discussed in Chapter 1, differences in log K 0 o's determined in various studies and also from predictions may be due to differences in the isolated colloidal organic matter studied, differences in the interactions of different HOC or classes of HOC with colloidal organic matter, and differences or problems associated with the experimental methods used for measuring HOC/colloid sorption.…”

Section: Partitioning Experimentsmentioning

confidence: 99%

“…Individual chlorobiphenyls exhibit a wide range of aqueous solubilities (Mackay et al, 1980a;Bruggeman et al, 1982) and octanol-water partition coefficients (Kow) (Woodburn et al, 1984;Rapaport and Eisenreich., 1984) which bracket the properties of many anthropogenic and biogenic organic compounds of environmental and biogeochemical interest. It was expected, from the basis of previous work (Means and Wijayaratne, 1982;Hassett and Anderson, 1982) that compounds of this range of solubilities would be significantly influenced by organic colloids in environments having high concentrations of organic matter such as interstitial waters of reducing marine sediments.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

The role of colloidal organic matter in the marine geochemistry of PCBs

Brownawell¹

1986

View full text Add to dashboard Cite

WITHDRAWN AD -sT~i~Bñ~c i~tZ4-2-ABSTRACT Polychlorinated biphenyls (PCBs) were used as model hydrophobic organic compounds (HOC) to study physical-chemical processes which affect the speciation and fate of HOC in coastal environments. The focus of this study is on the sorption of PCBs with colloidal organic matter in seawater, and the influence of this process on the distribution of PCBs in coastal sediments. Laboratory and field experiments were used to make quantitative estimates of PCB-organic matter sorption, and to test predictions of three-phase equilibrium models.A static headspace partitioning method was developed to measure the sorption of several individual chlorobiphenyls with colloidal organic matter enriched from coastal seawater by hollow fiber ultrafiltration. This technique directly measured the dissolved phase fugacity of PCBs in experimental bottles, and avoided uncertain separation techniques often used in isolating various chemical phases. Colloidal organic carbon normalized partition coefficients (Koc) were determined from linear sorption isotherms, and increased from 1.9 x 10' (L/Kg) for 2,4'-dichlorobiphenyl to 3.5 x 10 s for 2,2',3,4,5'-pentachlorobiphenyl. Sorption tended to increase with increasing octanol-water partition coefficients (Kow) of the sorbate, and values of Koc were within a range of those reported in other experimental sorption studies with sediments and dissolved humic substances. Experimental partitioning results support the hypothesis that HOC-organic colloid sorption is similar to HOC sorption by sediment organic matter.PCBs were measured in the interstitial waters and sediments of three box cores obtained from New Bedford Harbor and Buzzards Bay, Massachusetts. The three sites studied had a wide range of sediment PCB concentrations, and reducing conditions provided environments containing high concentrations of colloidal organic matter. Dissolved organic carbon (DOC) and total sediment organic carbon (TOC) were measured in two cores to test the role of organic matter on the observed partitioning of PCBs. PCB concentrations, particularly those of less soluble chlorobiphenyls, were highly elevated in interstitial waters compared to water column concentrations at all three sites. The measured apparent distribution coefficients (K'd) of individual chlorobiphenyls did not increase with hydrophobicity (Kow) and indicate that a large fraction of PCBs in interstitial waters must be sorbed to organic colloids. A three-phase equilibrium sorption model, in which dissolved PCBs are in a dynamic equilibrium with colloidal and sediment organic matter, accounts for many aspects of the field data. There is good agreement of observed partitioning at New Bedford Station 67 and Buzzards Bay Station M with model calculations based on predictions derived from laboratory experiments of HOC sorption with sediments and organic colloids, but model calculations underpredict K'd at Station 84 in New Bedford Harbor.-3-The sediment-interstitial water results were contrasted with a study of PCB pa...

show abstract

Section: Sorption Of Hoc With Colloidal Organic Mattermentioning

confidence: 98%

Section: The Constancy Of Kocmentioning

confidence: 99%

Section: Partitioning Experimentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The role of colloidal organic matter in the marine geochemistry of PCBs

Brownawell¹

1986

View full text Add to dashboard Cite

show abstract

“…Group contribution methods often overes timate log Kow values, especially for the highly hydro phobic compounds (61)(62)(63). Errors associated with these methods tend to increase with increasing Kow values.…”

mentioning

confidence: 99%

Methods for Estimating Solubilities of Hydrophobic Organic Compounds: Environmental Modeling Efforts

Andrén

Doucette

Dickhut

1987

Sources and Fates of Aquatic Pollutants

Self Cite

View full text Add to dashboard Cite

A variety of environmental fate models that integrate physicochemical properties of pollutants with advective and diffusive transport equations are now available. To satisfy the demand for missing input data, scientists have begun to incorporate property estimation techniques as part of their computational procedures. The recent appearance of high quality solubility data for polyhalogenated organic compounds makes it possible to evaluate several predictive schemes for these compounds. In this work, a brief review of the thermodynamics of hydrophobic compound solubility relationships is presented. This review is followed by an examination of the UNIFAC activity coefficient prediction technique. The use of octanol-water partition coefficients, total molecular surface areas, and molecular connectivity indexes to predict aqueous solubilities is then examined, and the resulting correlations are presented. MATHEMATICAL MODELING OF CHEMICAL FATE

show abstract

The Determination of Abraham Descriptors and Their Application to Crop Protection Research

Clarke

Mallon

2012

Modern Methods in Crop Protection Research

View full text Add to dashboard Cite

Generator column determination of octanol/water partition coefficients for selected polychlorinated biphenyl congeners

Cited by 115 publications

References 19 publications

The role of colloidal organic matter in the marine geochemistry of PCBs

The role of colloidal organic matter in the marine geochemistry of PCBs

Methods for Estimating Solubilities of Hydrophobic Organic Compounds: Environmental Modeling Efforts

The Determination of Abraham Descriptors and Their Application to Crop Protection Research

Contact Info

Product

Resources

About