Estudio de la contaminación del aire ambiente por material particulado sedimentable en el casco urbano de la ciudad de Machala provincia de El Oro

Machala is one of the most populated cities in the province of El Oro, therefore it is in a constant urban growth as well as the automotive sector, this causes an increase in atmospheric emissions in this area and having few studies on air quality, the following research work was proposed with the objective of determining the amount of sedimentable particulate matter (SPM) in the urban area of the city, by means of the gravimetric method (collection of particles in open containers) established for a monitoring time of three months (June, July and August 2022), analyzing a total of 40 points which were obtained through an environmental diagnosis (vehicle count). By means of the calculations established by the Unified Text of Secondary Environmental Legislation (TULSMA) in its Annex IV of Book VI in force in Ecuador, a level of compliance with this regulation of 60% was presented for the month of June, 70% for the month of July and 50% in the month of August, therefore, it was determined that the third month obtained higher concentrations of SPM in mg/cm2 *30 days of the entire study. Finally, the statistical analysis showed that the MPS concentrations and temperature had no relationship between them.