Monitoramento da qualidade do ar por meio de um sensor de baixo custo no município de Santarém/Pa

Abstract

Air pollution is one of the most serious and widely discussed environmental problems in the modern world. It is a mixture of harmful particles, gases and vapors that pollute the atmosphere and cause disastrous effects on human health and the environment. Climate change affects the lives of all inhabitants of the globe and even those who live in the forest are not exempt from this influence. Therefore, this study aims to monitor air quality through the concentrations of fine particulate matter (PM2,5), detected in a low-cost sensor in the municipality of Santarém (PA). For this work, 5 collection points were selected with data from the month of November 2022.The results show that the Ramal dos Coelhos community had a value of 1 ,000 (μg/m³) on the 26th and 27th days - the highest value recorded among the 5 discussed points, followed by Vila de Alter do Chão and Maracanã neighborhood, which registered an approximate value of 650 (μg/m³) on the 1 th, 2th, and 11 th days of november, respectively. In the Caranazal neighborhood, the highest value was approximately 350 (μg/m³) on the 6th day, and finally, the São Pedro community had a value of 250 (μg/m³) on the 19th. Furthermore, the location with the highest occurrence of the analyzed particulate matter was the Maracanã neighborhood. In conclusion, the importance of air quality monitoring in the region is emphasized, considering that significant variations in PM2,5 levels were observed among different locations based on one month of information. There are also promising prospects for the development of low-cost commercial sensors, given the encouraging results obtained.