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The fate of microplastics during uptake and depuration phases in a blue mussel exposure system

Environmental Toxicology and Chemistry 2018 59 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count.
Sinja Rist, Ida M. Steensgaard, Olgaç Güven, Torkel Gissel Nielsen, Lene Hartmann Jensen, Lene Friis Møller, Nanna B. Hartmann

Summary

A controlled exposure system tracked the fate of polystyrene microplastic beads in blue mussels during uptake and depuration phases, showing that mussels accumulated beads in the digestive gland and that depuration cleared most but not all particles over 24 hours. The mass balance approach provides a rigorous method for quantifying microplastic retention in bivalves.

We present a blue mussel exposure system where the fate of microplastics (polystyrene beads) is tracked during exposure and depuration phases. This enabled the establishment of a complete mass balance. Quantification of beads in mussels was done with a novel enzymatic digestion protocol. We found a similar relative distribution of beads for 2 environmentally realistic concentrations (5 and 100 beads L-1 ) and no substantial egestion of particles within 2 h of depuration. Environ Toxicol Chem 2019;38:99-105. © 2018 SETAC.

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