Size distribution and validity characterization of ultrafine particles in ambient conditions using multiple low-cost sensors

Multiple low-cost sensors were used to correlate real-world particle number, diameter, surface area and volume with laboratory-grade particle instruments. These instruments sampled a heavily trafficked road in Cambridge, UK continually over the course of several days. The instrument correlations concluded here, and the continuous monitoring allowed for the determination of particle size distributions for various traffic conditions using solely low-cost instruments. In addition, a catalytic stripper implemented on duplicate instruments allowed for volatility and chemical composition information to be gathered, as well as a brief understanding of the source apportionment for the roadside measurements presented here.

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