Resumen

ALVAREZ CRUZ, Arianna et al. Comparative evaluation of particle sensors in Santa Clara, Cuba. EAC [online]. 2023, vol.44, n.2, pp. 24-34.  Epub 01-Feb-2024. ISSN 1815-5928.

Particulate matter is one of the criteria air pollutants regulated according to standards established by the WHO and national regulations. Technological advances have allowed the development and implementation of low-cost sensors for monitoring, but they present limitations in the reliability of their data. This article aims to evaluate two low-cost sensor models (OPC-N3 and SDS011) in a field study in the rainy period with and without Saharan dust impact in Santa Clara, Cuba. For this purpose, PM10 and PM2.5 are monitored at three sampling sites on the main road of Santa Clara. The performance of OPC-N3 in measuring PM10, compared to the concentration determined by gravimetry in a small volume sampler, is calculated using two performance indicators, the root mean square error (RMSE) and the Willmott index (d). The results correspond to the characteristics of the evaluated scenarios, demonstrating the reliability of the measurements of particulate matter concentrations for the two sensors and the OPC-N3 calibration experiments for PM10 in the laboratory were satisfactory with low RMSE values and a Willmott of 0.95. The evaluation of the OPC-N3 and SDS011 sensors under field conditions in the two scenarios demonstrated the reliability of their measurements, the calibration of the OPC-N3 sensor with the reference instrument shows the feasibility of using this sensor for the measurement of PM10.

Palabras clave : Particles; Low-cost sensors; Monitoring; Calibration.

        · resumen en Español     · texto en Español     · Español ( pdf )