44ª Reunião Anual Virtual da SBQ

Data were obtained using a mobile environmental monitoring station, operated by the Municipal Department of the Environment (SMAC) from 2010 to 2018. Criteria pollutant concentrations (CO, fine particulate matter PM2.5, ozone, NO2 and SO2) were determined in the northern, southern and western areas of the city of Rio de Janeiro (16 locations). Data were displayed using boxplots and air quality levels (IQAs) were determined. For each location the pollutant of major concern was identified. The dispersion of pollutants was analyzed by comparing wind roses with HYSPLIT simulations. In downtown and the Guanabara Bay coast the most critical pollutant is PM2.5. In the northern and west zones, ozone levels are higher due to the impact of industrial emissions from the petrochemical complex (north). The identification of areas of major concern may be used to implement a plan to manage air quality in the city. The determination of ozone precursors may be a key advance to a complete understanding of ozone formation and requires substantial investment in the municipal monitoring net.