Análisis de niveles de exposición personal de material particulado PM 2,5 y NO2 al sur de Quito, mediante la construcción y calibración de un equipo de medición de bajo costo

Abstract

The present investigation was carried out to analyse the personal exposure of PM2,5 y NO2 of citizens in different means of transport in the south of the city of Quito, since there are only fixed monitoring stations, but no studies to measure the level of personal exposure, taking into account that the human being inhales 14 litres of air per minute, the exposure of citizens during their daily journeys must be taken into account, because they are higher than those registered by the fixed station and cope traffic for a long time causes a greater amount of pollutants to be inhaled, with short-term exposure to large amounts of pollutants being the cause of the increase in mortality in the population. Data collection was carried out through the construction and calibration of low-cost equipment for the measurement of PM2,5 y NO2, choosing the most used transport for monitoring: Ecovía, Trole, Corredor Sur Occidental, taxi, and automobile. The routes used were the same where the Ecovía (Maldonado Avenue), Trole (Teniente Hugo Ortiz Avenue) and the Corredor (Mariscal Sucre Avenue) circulate, all of which began the journey at the Quitumbe stop and ended at the El Recreo, Villaflora stops. and The Mascot respectively. Exposure was analysed for three weeks, the results were obtained for each day of the week, noting that there are high values at some stops and in several cases, they are higher than the levels reported by the fixed station.