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Protocol for Microplastics Sampling on the Sea Surface and Sample Analysis

Journal of Visualized Experiments 2016 183 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count.
Manca Kovač Viršek, Andreja Palatinus, Andreja Palatinus, Špela Koren, Monika Peterlin, Petra Horvat, Andrej Kržan

Summary

Researchers developed and described a detailed protocol for collecting sea-surface microplastic samples using a manta net, including sample preparation, particle separation, image analysis for sizing, and ATR-FTIR and micro-FTIR chemical identification, intended to support harmonized global monitoring.

Microplastic pollution in the marine environment is a scientific topic that has received increasing attention over the last decade. The majority of scientific publications address microplastic pollution of the sea surface. The protocol below describes the methodology for sampling, sample preparation, separation and chemical identification of microplastic particles. A manta net fixed on an »A frame« attached to the side of the vessel was used for sampling. Microplastic particles caught in the cod end of the net were separated from samples by visual identification and use of stereomicroscopes. Particles were analyzed for their size using an image analysis program and for their chemical structure using ATR-FTIR and micro FTIR spectroscopy. The described protocol is in line with recommendations for microplastics monitoring published by the Marine Strategy Framework Directive (MSFD) Technical Subgroup on Marine Litter. This written protocol with video guide will support the work of researchers that deal with microplastics monitoring all over the world.

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