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Title: Can adsorption isotherms predict sediment bioavailability? Author: Lawrence MA, Davies NA, Edwards PA, Taylor MG, Simkiss K. Journal: Chemosphere; 2000 Oct; 41(7):1091-100. PubMed ID: 10879828. Abstract: The adsorption and desorption of 2,4-dichlorophenol (DCP) and pentachlorophenol (PCP) were studied for a range of synthetic particles, a dimethylditallowammonium exchanged clay and a natural sediment. The synthetic particles were Dowex 1X8400, Toyopearl Phenyl 650M and Toyopearl SP 650M. The bioaccumulation of the DCP and PCP from these particles was then studied using the oligochaete, Lumbriculus variegatus. There is a correlation between contaminant-particle interactions, as determined from adsorption and desorption isotherms, and bioaccumulation. Bioaccumulation by L. variegatus was found to be highest from the systems where differences in the classification of adsorption and desorption isotherms were observed.[Abstract] [Full Text] [Related] [New Search]