Assessment of Atmospheric PM10 Pollution Levels and Chemical Composition in Urban Areas near the 2016 Olympic Game Arenas

This study aims to assess the COVID-19 partial lockdown influence on air quality in the Metropolitan Region Rio de Janeiro (MRRJ). Criteria pollutants (CO, SO2, O3, and NO2) sampled at four sites under vehicular and industrial influences were investigated, between March 1st to April 12th, 2019 and 2020. Results showed that the partial lockdown affected pollutant levels through emission sources reduction. High decreased concentrations were observed for SO2, NO2, and CO; while an increase in the ozone concentration was recorded. Pollutant time variation evaluations helped to understand the trend and sources in the different periods. Este estudo tem como objetivo avaliar a influência do lockdown parcial da COVID-19 na qualidade do ar na Região Metropolitana do Rio de Janeiro (RMRJ). Poluentes de critérios (CO, SO2, O3 e NO2) amostrados em quatro locais sob influências veiculares e industriais foram investigados, entre 1º de março e 12 de abril de 2019 e 2020. Os resultados mostraram que o bloqueio parcial afetou os níveis de poluentes por meio da redução das fontes de emissão. Reduções nas concentrações de SO2, NO2 e CO foram registradas; enquanto um aumento na concentração de ozônio foi observado. As avaliações da variação temporal dos poluentes ajudaram a entender a tendência e as fontes nos diferentes períodos.

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“…All of these changes have affected air quality in the region as reported in some studies [3][4][5][6][7][8][9][10] .…”

Section: Introductionmentioning

confidence: 87%

Time variation of atmospheric pollutants in first weeks of COVID-19 lockdown in the Metropolitan Region of Rio de Janeiro

Beringui¹,

Justo²,

Almeida³

et al. 2022

SEES

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“…This pattern has been documented in numerous prior studies. [27][28][29][30] Many researchers attribute this phenomenon to the cleansing impact of rainfall, which captures and deposits suspended particles in the atmosphere.…”

Section: Statistically Analysismentioning

confidence: 99%

Characterization of mercury in atmospheric particulate matter in the state of Rio de Janeiro, Brazil

Silva,

Felix,

Nascimento

et al. 2024

Environ. Sci.: Atmos.

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“…Numerous studies were carried out in the metropolitan region of Rio de Janeiro (MRRJ) before, during and after the 2014 Fifa World Cup and the 2016 Olympic Games to assess air quality (e.g., DE LA CRUZ et al, 2019;GOMES et al, 2018, JUSTO et al, 2020VENTURA et al, 2019a, b). However, the relationship between air quality, urban mobility, and fuel use has not been examined.…”

Section: Introductionmentioning

confidence: 99%

Impact of the transport system on air quality: the case of Rio de Janeiro, Brazil

Ventura¹,

Almeida

Ramos³

et al. 2022

SustDeb

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In the downtown area of Rio de Janeiro, Brazil, an urban mobility plan was implemented between 2011 and 2016 due to 2014 FIFA World Cup and the 2016 Olympic Games. This study aimed to evaluate the environmental benefits achieved by this urban mobility plan by comparing two periods: 2013 (before the megaevents) and 2017 (after the megaevents). Energy consumption and emissions from buses were estimated, and regulated pollutants (O3, CO, PM10, and PM2.5) were monitored. According to the calculations, NOx was the most emitted pollutant (60%). A 25% reduction levels for all pollutants was observed in 2017 compared to 2013. The reorganization of traffic shortened the bus routes, resulting in less fuel consumption (8%) and emissions. The annual mean concentrations of air pollutants (PM10, PM2.5, and CO) also decreased, thereby improving air quality. However, the levels of O3 increased, possibly owing to the reduction of NOx levels.

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Assessment of Atmospheric PM10 Pollution Levels and Chemical Composition in Urban Areas near the 2016 Olympic Game Arenas

Cited by 5 publications

References 37 publications

Time variation of atmospheric pollutants in first weeks of COVID-19 lockdown in the Metropolitan Region of Rio de Janeiro

Time variation of atmospheric pollutants in first weeks of COVID-19 lockdown in the Metropolitan Region of Rio de Janeiro

Characterization of mercury in atmospheric particulate matter in the state of Rio de Janeiro, Brazil

Impact of the transport system on air quality: the case of Rio de Janeiro, Brazil

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