ORCID

Abstract

Cosmetic products, such as facial scrubs, have been identified as potentially important primary sources of microplastics to the marine environment. This study characterises, quantifies and then investigates the sorptive properties of plastic microbeads that are used as exfoliants in cosmetics. Polyethylene microbeads were extracted from several products, and shown to have a wide size range (mean diameters between 164 and 327μm). We estimated that between 4594 and 94,500 microbeads could be released in a single use. To examine the potential for microbeads to accumulate and transport chemicals they were exposed to a binary mixture of 3H-phenanthrene and 14C-DDT in seawater. The potential for transport of sorbed chemicals by microbeads was broadly similar to that of polythene (PE) particles used in previous sorption studies. In conclusion, cosmetic exfoliants are a potentially important, yet preventable source of microplastic contamination in the marine environment.

DOI

10.1016/j.marpolbul.2015.07.029

Publication Date

2015-10-15

Publication Title

Marine Pollution Bulletin

Volume

99

Issue

1-2

ISSN

0025-326X

Keywords

Contaminant, Exfoliating microbeads, Microplastic, Ocean pollution, Polyethylene

First Page

178

Last Page

185

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