| Full text | |
| Author(s): |
Carvalho, Jonatas S.
;
Ferraz, Gabriel M.
;
Betim, Hugo L. I.
;
do Nascimento, Rita de Kassia S.
;
Scaramboni, Caroline
;
Urban, Roberta C.
Total Authors: 6
|
| Document type: | Journal article |
| Source: | Journal of the Brazilian Chemical Society; v. N/A, p. 14-pg., 2023-07-07. |
| Abstract | |
This study aimed to assess how a partial lockdown due to the coronavirus disease 2019 (COVID-19) pandemic affected air quality in four cities with dissimilar characteristics. In three cities, Araraquara (ARQ), Presidente Prudente (PPE), and Santos (STS), reductions in NO2 concentrations were observed due to social distancing. Conversely, in Santa Gertrudes (SGD), NO2 concentrations increased, indicating that a brief pause in ceramics industry activity was not sufficient to reduce NO2 emissions. A variable behavior was observed in O3 concentrations; in some cases, it followed the trends observed in previous years, but in others, an increase or decrease in concentrations was observed due to variations in concentrations of NO2 and volatile organic compounds and/or climatic conditions. Particulate matter (PM) concentrations decreased in SGD and STS due to social distancing, meteorological conditions, such as wind speed, and reductions in industrial and port activities. Nevertheless, in the cities of ARQ and PPE, particulate matter with aerodynamic diameter & LE; 10 & mu;m (PM10) concentrations were elevated during the pandemic period, due to numerous biomass burning events in 2020. Thus, although vehicular and industrial emission control/reduction policies are effective in improving air quality, they may not be sufficient to achieve air quality standards if they are not combined with more restrictive measures to manage biomass burning. (AU) | |
| FAPESP's process: | 18/04820-6 - Chemical composition of the atmosphere of Araraquara mesoregion and its impact on health |
| Grantee: | Roberta Cerasi Urban |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 18/17931-0 - Atmospheric particulate matter from a region impacted by biomass burning: sources and toxicity |
| Grantee: | Caroline Scaramboni |
| Support Opportunities: | Scholarships in Brazil - Doctorate |
| FAPESP's process: | 22/03087-9 - Plastic pandemic: current exposures to microplastics in cities of the São Paulo State, their implications on health, and the impact of the COVID-19 |
| Grantee: | Roberta Cerasi Urban |
| Support Opportunities: | Research Grants - Initial Project |