Tunable resistive pulse sensing (TRPS) offers precise size and concentration measurements for nanoplastics, outperforming other particle analysis methods like dynamic light scattering (DLS) and nanoparticle tracking analysis (NTA) in polydisperse mixtures.

TRPS detects nanoplastics by measuring changes in electrical resistance as particles pass through a nanopore, providing accurate quantification of particle size distribution and concentration even in heterogeneous samples. This method’s sensitivity and ability to distinguish diverse particle sizes make it particularly well-suited for analyzing environmental samples where nanoplastics coexist with other particulates, enabling more reliable assessments of pollution levels and particle characteristics.