Methods for sampling and detection of microplastics in water and sediment: A critical review

Last modified: 
May 7, 2019 - 5:10pm
Type: Journal Article
Year of publication: 2019
Date published: 01/2019
Authors: Joana Prata, João da Costa, Armando Duarte, Teresa Rocha-Santos
Journal title: TrAC Trends in Analytical Chemistry
Volume: 110
Pages: 150 - 159
ISSN: 01659936

Microplastics are widespread contaminants, virtually present in all environmental compartments. However, knowledge on sources, fate and environmental concentration over time and space still is limited due to the laborious and varied analytical procedures currently used. In this work we critically review the methods currently used for sampling and detection of microplastics, identifying flaws in study design and suggesting promising alternatives. This work provides insights on bulk sample collection, separation, digestion, identification and quantification, and mitigation of cross-contamination. The sampling of microplastics will improve in representativeness and reproducibility through the determination of bulk sample volume, filter's pore size, density separation and digestion solutions, but also through use of novel methods, such as the enhancement of visual identification by staining dyes, and the generalized use of chemical characterization.

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