Journal
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
Volume 130, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.trac.2020.115993
Keywords
Microplastics; Ecotoxicology; Aquatic; Optical nanosensor; Characterisation
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Funding
- University of Exeter
- QUEX Institute
- University of Queensland
- Natural Environment Research Council [NE/N006178/1]
- NERC [NE/N006178/1] Funding Source: UKRI
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Microplastics have been found in all marine ecosystems, raising concern about their potential environmental impacts. Yet relatively little research has focused on surface characteristics, compared to polymer type. The aim of this review is to discuss the importance of microplastic surface properties and how expanded characterisation and more detailed quantification can aid in assessing their behaviours in aquatic environments. Concepts including surface roughness, formation of surface ecocoronae and sorptive behaviours of microplastic surfaces are discussed. To address these concepts, three exemplary methods are introduced and their application to the study of microplastic surfaces discussed with the following recommendations; atomic force microscopy should be explored for conducting physical surface characterisation and to examine surface roughness; double-shot Pyrolysis-Gas Chromatography-Mass Spectroscopy should be considered for examining microplastic sorption behaviours in multisolute media; and finally, Whispering Gallery Mode nanosensing techniques should be explored as a potential means to generate data on microplastic sorption kinetics. (C) 2020 Elsevier B.V. All rights reserved.
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