EVALUATION OF PM10 PARTICULATE MATERIAL CONCENTRATIONS IN PORTOVIEJO CITY, ECUADOR
DOI:
https://doi.org/10.33936/revbasdelaciencia.v7i3.4240Keywords:
Keywords: atmospheric particles, PM10, inhalable particulate matter.Abstract
This research work evaluated the temporal distribution during the period December-2018 to November-2019, of PM10 atmospheric particles in the Portoviejo city, Manabí-Ecuador, and its relationship with some meteorological parameters. Sample collection was performed using a Graseby Andersen GMW 10 inlet inhalable particulate matter PM10 collection equipment, employing quartz microfiber filters, for 24 hours, at an air 40 ft3/min flow rate. The results´ analysis showed that the annual average PM10 concentrations in the city were 27.03±5.28 µg/m3, which is below the maximum annual permissible limit established by the Ecuadorian air quality standard; likewise, the daily PM10 concentrations did not exceed the permissible limit established by the standard. There is no statistically significant correlation (p=0.01) between the two seasonal periods evaluated, with the value for the rainy season being 26.95±6.38 µg/m3, and the dry season 27.11±4.54 µg/m3. When relating the monthly concentrations of PM10 with the meteorological variables, it was found that there isn´t significant correlation between them (p=0.05), which allows us to understand that the variation in the concentrations of inhalable particulate matter is attributable to a greater influence of the fixed and mobile sources in the study area. The comparison of the PM10 annual average in Portoviejo with other cities in the world allows us to establish that its concentration is similar to that of highly urbanized megacities.
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