Plastic as a Carrier of POPs to Aquatic Organisms: A Model Analysis
| Autor: | Anna Wegner, Edwin M. Foekema, Ellen Besseling, Albert A. Koelmans |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Aquatic Ecology and Water Quality Management
Aquatic Organisms genetic structures resin pellets field data Experimental Ecology deposit feeders behavioral disciplines and activities Experimentele Ecologie Aquatic organisms Lugworm Low affinity marine-environment Animals Environmental Chemistry Organic Chemicals polycyclic aromatic-hydrocarbons Pollutant WIMEK biology urogenital system Detritivore Sorption General Chemistry Aquatische Ecologie en Waterkwaliteitsbeheer Models Theoretical biology.organism_classification Wageningen Marine Research Dilution bioaccumulation polychlorinated-biphenyls pcbs Vis food webs Environmental chemistry Bioaccumulation Environmental science arenicola-marina Plastics mytilus-edulis l psychological phenomena and processes |
| Zdroj: | Environmental Science and Technology, 47(14), 7812-7820 Environmental Science and Technology 47 (2013) 14 |
| ISSN: | 1520-5851 0013-936X |
| DOI: | 10.1021/es401169n |
| Popis: | It has been hypothesized that persistent organic pollutants (POPs) in microplastic may pose a risk to aquatic organisms. Here we develop and analyze a conceptual model that simulates the effects of plastic on bioaccumulation of POPs. The model accounts for dilution of exposure concentration by sorption of POPs to plastic (POP “dilution”), increased bioaccumulation by ingestion of plastic-containing POPs (“carrier”), and decreased bioaccumulation by ingestion of clean plastic (“cleaning”). The model is parametrized for the lugworm Arenicola marina and evaluated against recently published bioaccumulation data for this species from laboratory bioassays with polystyrene microplastic. Further scenarios include polyethylene microplastic, nanosized plastic, and open marine systems. Model analysis shows that plastic with low affinity for POPs such as polystyrene will have a marginal decreasing effect on bioaccumulation, governed by dilution. For stronger sorbents such as polyethylene, the dilution, carrier, and cleaning mechanism are more substantial. In closed laboratory bioassay systems, dilution and cleaning dominate, leading to decreased bioaccumulation. Also in open marine systems a decrease is predicted due to a cleaning mechanism that counteracts biomagnification. However, the differences are considered too small to be relevant from a risk assessment perspective. |
| Databáze: | OpenAIRE |
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