A review of analytical techniques for quantifying microplastics in sediments

Hanvey, J, Lewis, P, Lavers, J, Crosbie, N, Pozo, K and Clarke, B 2017, 'A review of analytical techniques for quantifying microplastics in sediments', Analytical Methods, vol. 9, no. 9, pp. 1369-1383.


Document type: Journal Article
Collection: Journal Articles

Title A review of analytical techniques for quantifying microplastics in sediments
Author(s) Hanvey, J
Lewis, P
Lavers, J
Crosbie, N
Pozo, K
Clarke, B
Year 2017
Journal name Analytical Methods
Volume number 9
Issue number 9
Start page 1369
End page 1383
Total pages 15
Publisher Royal Society of Chemistry
Abstract The Royal Society of Chemistry. In this review the analytical techniques for measuring microplastics in sediment have been evaluated. Four primary areas of the analytical process have been identified that include (1) sampling, (2) extraction, (3) quantitation and (4) quality assurance/quality control (QAQC). Each of those sections have their own subject specific challenges and require further method development and harmonisation. The most common approach to extracting microplastics from sediments is density separation. Following extraction, visual counting with an optical microscope is the most common technique for quantifying microplastics; a technique that is labour intensive and prone to human error. Spectroscopy (FTIR; Raman) are the most commonly applied techniques for identifying polymers collected through visual sorting. Improvements and harmonisation on size fractions, sampling approaches, extraction protocols and units for reporting plastic abundance would aid comparison of data generated by different research teams. Further, we advocate the development of strong QAQC procedures to be adopted like other fields of analytical chemistry. Finally, inter-laboratory proficiency testing is recommended to give an indication of the variation and reliability in measurements reported in the scientific literature that may be under- or overestimations of environmental burdens.
Subject Macromolecular and Materials Chemistry not elsewhere classified
Ecology not elsewhere classified
DOI - identifier 10.1039/c6ay02707e
Copyright notice This journal is © The Royal Society of Chemistry 2017
ISSN 1759-9660
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