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Environ Pollut. 2015 Nov;206:73-9. doi: 10.1016/j.envpol.2015.06.009. Epub 2015 Jul 3.

Influence of polyethylene microplastic beads on the uptake and localization of silver in zebrafish (Danio rerio).

Author information

1
Department of Environmental, Social and Spatial Change (ENSPAC), Roskilde University, Universitetsvej 1, PO Box 260, DK-4000, Roskilde, Denmark. Electronic address: frkhan@ruc.dk.
2
Department of Environmental, Social and Spatial Change (ENSPAC), Roskilde University, Universitetsvej 1, PO Box 260, DK-4000, Roskilde, Denmark.
3
Department of Conservation, National Museum of Denmark, Brede, 2800, Kongens Lyngby, Denmark.
4
Nutritional Sciences Division, King's College London, Franklin-Wilkins Building, 150 Stamford Street, London, SE1 9NH, United Kingdom.

Abstract

This study aimed to determine whether the uptake and localization of Ag in zebrafish was affected by the presence of polyethylene microplastic beads (PE MPBs). Zebrafish were exposed to 1 μg Ag L(-1) (radiolabelled with (110m)Ag) for 4 and 24 h in the presence or absence of PE MPBs (10, 100 or 1000 MPBs mL(-1)), and one treatment in which MPBs (1000 MPBs mL(-1)) were incubated with Ag to promote adsorption. The presence of MPBs, at any of the tested doses, had no effect on the uptake or localization of Ag. However, exposure to the Ag-incubated MPBs (∽75% of the Ag bound to MPBs) significantly reduced Ag uptake at both time points and also significantly increased the proportion of intestinal Ag. This study demonstrates that microplastics can alter the bioavailability and uptake route of a metal contaminant in a model fish species.

KEYWORDS:

Adsorbed pollutants; Dietary metal; Microplastics; Scrubbers; Vector-effect

PMID:
26142753
DOI:
10.1016/j.envpol.2015.06.009
[Indexed for MEDLINE]

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