PMID- 16690183 OWN - NLM STAT- MEDLINE DCOM- 20070216 LR - 20181201 IS - 0269-7491 (Print) IS - 0269-7491 (Linking) VI - 145 IP - 1 DP - 2007 Jan TI - Modelling 2,4-dichlorophenol bioavailability and bioaccumulation by the freshwater fingernail clam Sphaerium corneum using artificial particles and humic acids. PG - 238-44 AB - The complex and variable composition of natural sediments makes it very difficult to predict the bioavailability and bioaccumulation of sediment-bound contaminants. Several approaches have been proposed to overcome this problem, including an experimental model using artificial particles with or without humic acids as a source of organic matter. For this work, we have applied this experimental model, and also a sample of a natural sediment, to investigate the uptake and bioaccumulation of 2,4-dichlorophenol (2,4-DCP) by Sphaerium corneum. Additionally, the particle-water partition coefficients (K(d)) were calculated. The results showed that the bioaccumulation of 2,4-DCP by clams did not depend solely on the levels of chemical dissolved, but also on the amount sorbed onto the particles and the characteristics and the strength of that binding. This study confirms the value of using artificial particles as a suitable experimental model for assessing the fate of sediment-bound contaminants. FAU - Verrengia Guerrero, N R AU - Verrengia Guerrero NR AD - Toxicology and Legal Chemistry, Department of Biological Chemistry, Faculty of Exact and Natural Sciences, University of Buenos Aires, Argentina. noev@qb.fcen.uba.ar FAU - Taylor, M G AU - Taylor MG FAU - Simkiss, K AU - Simkiss K LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20060511 PL - England TA - Environ Pollut JT - Environmental pollution (Barking, Essex : 1987) JID - 8804476 RN - 0 (Aluminum Silicates) RN - 0 (Chlorophenols) RN - 0 (Humic Substances) RN - 0 (Resins, Synthetic) RN - 0 (Water Pollutants, Chemical) RN - R669TG1950 (2,4-dichlorophenol) RN - T1FAD4SS2M (Clay) SB - IM MH - Aluminum Silicates MH - Animals MH - Biological Availability MH - Bivalvia/*metabolism MH - Chlorophenols/*pharmacokinetics MH - Clay MH - Fresh Water MH - *Geologic Sediments MH - *Humic Substances MH - Hydrogen-Ion Concentration MH - Models, Biological MH - Resins, Synthetic MH - Water Pollutants, Chemical/*pharmacokinetics EDAT- 2006/05/13 09:00 MHDA- 2007/02/17 09:00 CRDT- 2006/05/13 09:00 PHST- 2005/06/05 00:00 [received] PHST- 2006/03/03 00:00 [revised] PHST- 2006/03/12 00:00 [accepted] PHST- 2006/05/13 09:00 [pubmed] PHST- 2007/02/17 09:00 [medline] PHST- 2006/05/13 09:00 [entrez] AID - S0269-7491(06)00202-8 [pii] AID - 10.1016/j.envpol.2006.03.014 [doi] PST - ppublish SO - Environ Pollut. 2007 Jan;145(1):238-44. doi: 10.1016/j.envpol.2006.03.014. Epub 2006 May 11.