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Size-Resolved Concentration Estimation of Nano- and Micro-Plastics for Different Water Salinity with Nanoelectrode Array Sensors
Summary
Researchers investigated the use of capacitance spectroscopy at nanoelectrode arrays to estimate size-resolved concentrations of nanoplastics and microplastics in water across a range of salinities and polydisperse particle sizes. The study extended previous results to more realistic scenarios, addressing how ionic strength and particle size affect measurement accuracy for environmental monitoring applications.
The need for accurate monitoring of nanoplastics and microplastics in water is increasing as global plastic production and waste continue to rise. In this context, this work explores the use of capacitance spectroscopy at nanoelectrode arrays for pollutant monitoring in water. This technology offers benefits such as portability, high parallelization, scalability, single particle detection, and measurement automatization. However, challenges arising from the dependence of the measurement on the ionic strength of the solution and the size of the nanopollutants must be carefully addressed. In this work, a size-resolved concentration estimation method for nanoplastics monitoring in water is investigated, extending the validity of previous preliminary results to a wide range of polydisperse particles' size and water salinity; hence, more realistic scenarios.