PMID- 24212067 OWN - NLM STAT- MEDLINE DCOM- 20140320 LR - 20181202 IS - 1873-6424 (Electronic) IS - 0269-7491 (Linking) VI - 185 DP - 2014 Feb TI - Enhanced desorption of persistent organic pollutants from microplastics under simulated physiological conditions. PG - 16-23 LID - S0269-7491(13)00527-7 [pii] LID - 10.1016/j.envpol.2013.10.007 [doi] AB - Microplastics have the potential to uptake and release persistent organic pollutants (POPs); however, subsequent transfer to marine organisms is poorly understood. Some models estimating transfer of sorbed contaminants to organisms neglect the role of gut surfactants under differing physiological conditions in the gut (varying pH and temperature), examined here. We investigated the potential for polyvinylchloride (PVC) and polyethylene (PE) to sorb and desorb (14)C-DDT, (14)C-phenanthrene (Phe), (14)C-perfluorooctanoic acid (PFOA) and (14)C-di-2-ethylhexyl phthalate (DEHP). Desorption rates of POPs were quantified in seawater and under simulated gut conditions. Influence of pH and temperature was examined in order to represent cold and warm blooded organisms. Desorption rates were faster with gut surfactant, with a further substantial increase under conditions simulating warm blooded organisms. Desorption under gut conditions could be up to 30 times greater than in seawater alone. Of the POP/plastic combinations examined Phe with PE gave the highest potential for transport to organisms. CI - Copyright (c) 2013 Elsevier Ltd. All rights reserved. FAU - Bakir, Adil AU - Bakir A AD - Marine Biology and Ecology Research Centre (MBERC), School of Marine Science and Engineering, University of Plymouth, Drake Circus, Plymouth, Devon PL4 8AA, United Kingdom; Petroleum and Environmental Geochemistry Group (PEGG), School of Marine Science and Engineering, University of Plymouth, Drake Circus, Plymouth, Devon PL4 8AA, United Kingdom. FAU - Rowland, Steven J AU - Rowland SJ AD - Petroleum and Environmental Geochemistry Group (PEGG), School of Marine Science and Engineering, University of Plymouth, Drake Circus, Plymouth, Devon PL4 8AA, United Kingdom. FAU - Thompson, Richard C AU - Thompson RC AD - Marine Biology and Ecology Research Centre (MBERC), School of Marine Science and Engineering, University of Plymouth, Drake Circus, Plymouth, Devon PL4 8AA, United Kingdom. Electronic address: R.C.Thompson@plymouth.ac.uk. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20131106 PL - England TA - Environ Pollut JT - Environmental pollution (Barking, Essex : 1987) JID - 8804476 RN - 0 (Plastics) RN - 0 (Surface-Active Agents) RN - 0 (Water Pollutants, Chemical) SB - IM MH - Aquatic Organisms MH - *Models, Chemical MH - Plastics/*chemistry MH - Seawater/*chemistry MH - Surface-Active Agents/chemistry MH - Water Pollutants, Chemical/analysis/*chemistry OTO - NOTNLM OT - Desorption OT - Gut surfactant OT - Hydrophobic organic compounds OT - Marine Strategy Framework Directive OT - Microplastic EDAT- 2013/11/12 06:00 MHDA- 2014/03/22 06:00 CRDT- 2013/11/12 06:00 PHST- 2013/06/21 00:00 [received] PHST- 2013/09/23 00:00 [revised] PHST- 2013/10/04 00:00 [accepted] PHST- 2013/11/12 06:00 [entrez] PHST- 2013/11/12 06:00 [pubmed] PHST- 2014/03/22 06:00 [medline] AID - S0269-7491(13)00527-7 [pii] AID - 10.1016/j.envpol.2013.10.007 [doi] PST - ppublish SO - Environ Pollut. 2014 Feb;185:16-23. doi: 10.1016/j.envpol.2013.10.007. Epub 2013 Nov 6.