Determinación de la concentración de sox y nox mediante captadores pasivos en poblaciones contiguas a mecheros petroleros en la provincia de Orellana

Abstract

The aim of this graduation work was to evaluate the concentration of NOx and SOx in population adjacent to oil gas burners located in Orellana province, this was carried out by means of passive samplers which allowed obtaining data on the amount of concentration which affects the inhabitants in these areas. The sampling points were distributed in the three towns located near the oil wells; twenty in Sacha Norte 1, where ten points were randomly selected for NOx and ten for SOx; Sacha Sur had eleven points for NOx and eleven for SOx and Sacha Norte 2 had 24 selected points for both, NOx and SOx. Passive samplers prepared in the GADPO laboratory were placed 700 square meters around the area and were placed in a range from 2 to 4 m above the ground in places close to the houses. The passive samplers absorb NOx and SOx by means of a triethanolamine, N-butanol and distilled water solution, these were monitored during 8 weeks and analyzed by AQUAMATE PLUS UV-VIS to establish their concentrations. Subsequently, data corrections were made through the total mass, concentration calculation and corrected environment concentration formulas. The results revealed that Sacha Sur population presented maximum values, especially during 4 and 9 weeks; however, the population of Sacha Norte 1 and Sacha Norte 2 had very similar data in their maximum and minimum levels. It is recommended to continue working on this type of analysis to see how the concentrations are changing, taking into account meteorological factors and complementing the study with fixed and mobile sources of SOx and NOx emissions to establish the direct relationship existing between air pollution concentration and the origin source.