Polychlorinated Biphenyl Sorption and Availability in Field-Contaminated Sediments | Zendy

David Werner | Zendy; Sarah E. Hale | Zendy; Upal Ghosh | Zendy; Richard G. Luthy | Zendy

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Polychlorinated Biphenyl Sorption and Availability in Field-Contaminated Sediments

Author(s) -

David Werner,

Sarah E. Hale,

Upal Ghosh,

Richard G. Luthy

Publication year - 2009

Publication title -

environmental science and technology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.851

H-Index - 397

eISSN - 1520-5851

pISSN - 0013-936X

DOI - 10.1021/es902325t

Subject(s) - sorption , polychlorinated biphenyl , environmental chemistry , partition coefficient , chemistry , aqueous solution , biphenyl , congener , sediment , total organic carbon , contamination , aqueous two phase system , persistent organic pollutant , organic matter , dissolved organic carbon , adsorption , chromatography , hydrocarbon , organic chemistry , geology , paleontology , ecology , biology

Traditional and new relationships of polychlorinated biphenyl (PCB) distribution among the solid phases, the free aqueous phase, and biolipids are comprehensively reviewed using seven well-characterized freshwater and marine sediments polluted with PCBs. The traditional relationship relating free aqueous concentration and biolipid concentration to sediment total organic carbon, compound octanol-water partitioning coefficient, and solid-phase contaminant concentration overestimates measured free aqueous concentrations and biolipid concentrations by mean factors of 8 and 33, respectively. By contrast, relationships based on measured free aqueous phase concentrations or the PCB mass fraction desorbed from sediment provide reasonable predictions of biolipid concentrations. Solid-phase concentration-based predictions perform better when sorption to amorphous organic matter and black carbon (BC) is distinguished. Contrary to previously published relationships, BC sorption appears to be linear for free aqueous PCB-congener concentrations in the picogram to microgram per liter range.

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