Plastic particles are almost omnipresent in our environment. Even though nanoplastic pollution also falls into this area of concern, current analytical approaches reach their limits in this size range.
This paper by Schwaferts et al. addresses methodological gaps that exist in the analysis of microplastics. Specifically, it deals with the analysis of nanoparticles, as they are not covered by common analytical methods.
Tracking of (Sub)Microplastics of Different Identities - Innovative Analysis Tools for Toxicological and Process-engineering Evaluation
The methods currently available for the analysis of microplastics in environmental matrices are primarily designed for particles in the size range of 1 μm to 5 mm. Smaller particles below 1 μm have hardly been detected so far. However in contrast to larger particles, these are able to enter cells and have a higher potential for adsorption of pollutants due to their relatively larger surface.