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Measuring particle size distribution and mass concentration of nanoplastics and microplastics: addressing some analytical challenges in the sub-micron size range

Journal of Colloid and Interface Science 2021 242 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 50 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Jessica Ponti, Fanny Caputo, Robert Vogel, Jessica Ponti, Jessica Ponti, Fanny Caputo, Jessica Ponti, Dóra Méhn John R. K. Savage, Jessica Ponti, Jessica Ponti, Dóra Méhn Dóra Méhn Dóra Méhn Jessica Ponti, Gabriele Vella, Jessica Ponti, Dóra Méhn Dóra Méhn Alice Law, Dóra Méhn Jessica Ponti, Otmar Geiss, Luigi Calzolai, Jessica Ponti, Dóra Méhn Giacomo Della Camera, Giacomo Della Camera, Jessica Ponti, Jessica Ponti, Otmar Geiss, Dóra Méhn Dóra Méhn Jessica Ponti, Gary Hannon, Dóra Méhn Ben Peacock, Jessica Ponti, Dóra Méhn Dóra Méhn Jessica Ponti, Jessica Ponti, Otmar Geiss, Dimitri Aubert, Gabriele Vella, Adriele Prina‐Mello, Luigi Calzolai, Adriele Prina‐Mello, Robert Vogel, Fanny Caputo, Dóra Méhn

Summary

This technical review compared analytical methods for measuring particle size distribution and mass concentration of nano- and microplastics, identifying tunable resistive pulse sensing and centrifugal liquid sedimentation as the most suitable approaches for the 60 nm–5 µm size range.

Light scattering-based measurements do not have the resolution to distinguish multiple populations in polydisperse samples. Nanoparticle tracking analysis (NTA), nano-flowcytometry (nFCM) and asymmetric flow field flow fractionation hyphenated with multiangle light scattering (AF4-MALS) cannot measure particles in the micrometre range. Static light scattering (SLS) is not able to accurately detect particles below 200 nm, and similarly to transmission electron microscopy (TEM) and flow cytometry (FCM), is not suitable for accurate mass-based concentration measurements. Alternatives for high-resolution sizing and concentration measurements in the size range between 60 nm and 5 µm are tunable resistive pulse sensing (TRPS) and centrifugal liquid sedimentation (CLS), that can bridge the gap between the nanometre and micrometre range.

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