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Table 2 Articles included in the systematic review. Some authors analyze plastic particles in environmental samples while others use spiked samples for the development of HSI methods. Size ranges given in μm were not always completely reported and thus some are reported as either a maximum or minimum size analyzed by the authors

From: Hyperspectral imaging as an emerging tool to analyze microplastics: A systematic review and recommendations for future development

Type of study/sample MP size range collected/analyzed (μm) Collection method/origin of particle Sample clean-up/preparation Reference
Seawater 300–500 Manta trawl Size fractionation, enzymatic digestion, peroxide oxidation, filtration [54]
250–5000 Manta trawl Visual selection [55]
>  63 Niskin bottle Ethanol, peroxide oxidation, filtration [56]
>  333 (trawl)
>  50 (pump)
Manta trawl and in-situ pump Visual selection [57]
>  500 Manta trawl No description given [58]
Sand/soil >  100 Quadrat sample Size fractionated, collected in petri dish [59]
500–5000 Quadrat sample Density separation, visual selection [60]
Biota 100–1000 Purchase of fish from local market Rinsing & scraping of intestinal tract, smear on Teflon plate [61]
Methodology study 180–647,000 Pristine pellets purchased from manufacturer, collection of urban waste Manually cut or milled into smaller particles [62]
<  2 Polymer matrix synthesized in lab Photodegradation to produce nanoparticles [63]
200–3000 Pristine pellets purchased from manufacturer; local household items collected Grinding and size fractionation by metal sieve or manual cutting [64]
Manta trawl in seawater Filtration of seawater samples
100–5000 Pristine pellets and large plates purchased from manufacturer Manually cut into smaller particles [65]