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Source apportionment and health impact assessment of atmospheric particulate matter in the city of Sao Carlos, Brazil

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Carvalho, Jonatas Schadeck ; do Nascimento, Rita de Kassia Silva ; Cintra, Joao Vitor Franca da Rosa Ferreira ; da Rosa, Natasha Leandra Chiaranda ; Grosseli, Guilherme Martins ; Fadini, Pedro Sergio ; Urban, Roberta Cerasi
Número total de Autores: 7
Tipo de documento: Artigo Científico
Fonte: Chemosphere; v. 326, p. 10-pg., 2023-03-21.

In this study, positive matrix factorization method was used for source apportionment of PM10 in the city of Sao Carlos from 2015 to 2018. The annual mean concentrations of PM10, 15 PAHs, 4 oxy-PAHs, 6 nitro-PAHs, 21 saccharides, and 17 ions in these samples were in the ranges 18.1 +/- 6.99 to 25.0 +/- 11.3 mu g m(-3) for PM10, 9.80 x 10(-1) +/- 2.06 to 2.03 +/- 8.54 x 10(-1) ng m(-3) for Sigma PAHs, 83.9 +/- 35.7 to 683 +/- 521 pg m(-3) for Sigma oxy-PAHs, 1.79 x 10(-2) +/- 1.23 x 10(-1) to 7.12 +/- 4.90 ng m(-3) for Sigma nitro-PAHs, 83.3 +/- 44.7 to 142 +/- 85.9 ng m(-3) for Sigma saccharides, and 3.80 +/- 1.54 to 5.66 +/- 4.52 mu g m(-3) for Sigma ions. For most species, the concentrations were higher in the dry season than in the rainy. This was related not only to the low rainfall and relative humidity characteristic of the dry season but also to an increase in fire spots recorded in the region between April and September every year from 2015 to 2018. A 4-factor solution provided the best description of the dataset, with the four identified sources of PM10 being soil resuspension (28%), biogenic emissions (27%), biomass burning (27%), and vehicle exhaust together with secondary PM (18%). Although the PM10 concentrations were not above the limit established by local legislation, the epidemiological study showed that by reducing PM2.5 concentrations to the level recommended by the WHO, approximately 35 premature deaths per 100,000 population could be avoided annually. The results revealed that biomass burning continues to be one of the main anthropic sources of emissions to the atmosphere in the region, so it needs to be incorporated into the existing guidelines and policies to reduce the concentration of particulate matter to within the limits recommended by the WHO, in order to avoid premature deaths. (AU)

Processo FAPESP: 14/50951-4 - INCT 2014: Tecnologias Analíticas Avançadas
Beneficiário:Celio Pasquini
Modalidade de apoio: Auxílio à Pesquisa - Temático
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Beneficiário:Roberta Cerasi Urban
Modalidade de apoio: Auxílio à Pesquisa - Regular
Processo FAPESP: 20/04084-8 - Determinação de hidrocarbonetos policíclicos aromáticos e seus derivados no material particulado atmosférico da Cidade de São Carlos e seus impactos na saúde
Beneficiário:Natasha Leandra Chiaranda da Rosa
Modalidade de apoio: Bolsas no Brasil - Iniciação Científica
Processo FAPESP: 22/03087-9 - Pandemia plástica: cenário atual dos microplásticos em cidades do Estado de São Paulo, suas implicações na saúde e o impacto da COVID-19
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Modalidade de apoio: Auxílio à Pesquisa - Projeto Inicial
Processo FAPESP: 21/10187-7 - Micro e nanoplásticos atmosféricos: efeitos na saúde e o impacto da pandemia de COVID-19
Beneficiário:Roberta Cerasi Urban
Modalidade de apoio: Bolsas no Exterior - Pesquisa