Human risk assessment of ash soil after 2020 wildfires in Pantanal biome (Brazil).

Autor: Caumo S; National School of Public Health, Oswaldo Cruz Foundation, Rio de Janeiro, RJ Brazil.; Brazilian Research Network on Global Climate Change - Rede Clima, Rio de Janeiro, Brazil., Lázaro WL; Research Centre, Limnology, Biodiversity and Ethnobiology of the Pantanal, University of the State of Mato Grosso, Cáceres, MT Brazil., Sobreira Oliveira E Jr; Research Centre, Limnology, Biodiversity and Ethnobiology of the Pantanal, University of the State of Mato Grosso, Cáceres, MT Brazil., Beringui K; Department of Chemistry, Pontifical Catholic University of Rio de Janeiro (PUC-Rio), Rio de Janeiro, RJ Brazil., Gioda A; Department of Chemistry, Pontifical Catholic University of Rio de Janeiro (PUC-Rio), Rio de Janeiro, RJ Brazil., Massone CG; Department of Chemistry, Pontifical Catholic University of Rio de Janeiro (PUC-Rio), Rio de Janeiro, RJ Brazil., Carreira R; Department of Chemistry, Pontifical Catholic University of Rio de Janeiro (PUC-Rio), Rio de Janeiro, RJ Brazil., de Freitas DS Jr; Research Centre, Limnology, Biodiversity and Ethnobiology of the Pantanal, University of the State of Mato Grosso, Cáceres, MT Brazil., Ignacio ARA; Research Centre, Limnology, Biodiversity and Ethnobiology of the Pantanal, University of the State of Mato Grosso, Cáceres, MT Brazil., Hacon S; National School of Public Health, Oswaldo Cruz Foundation, Rio de Janeiro, RJ Brazil.; Brazilian Research Network on Global Climate Change - Rede Clima, Rio de Janeiro, Brazil.; Research Centre, Limnology, Biodiversity and Ethnobiology of the Pantanal, University of the State of Mato Grosso, Cáceres, MT Brazil.
Jazyk: angličtina
Zdroj: Air quality, atmosphere, & health [Air Qual Atmos Health] 2022; Vol. 15 (12), pp. 2239-2254. Date of Electronic Publication: 2022 Sep 28.
DOI: 10.1007/s11869-022-01248-2
Abstrakt: Wildfires have increased in the last years and, when caused by intentional illegal burnings, are frequently run out of control. Wildfire has been pointed out as an important source of polycyclic aromatic hydrocarbons (PAHs) and trace elements (TEs) - such as, As, Ni, and Pb - to environmental compartments, and thus may pose a risk to human health and to the ecosystem. In 2020, the Brazilian biome, Pantanal, faced the largest losses by wildfires in the last 22 years. Ashes from the topsoil layer in Pantanal were collected after these wildfires at 20 sites divided into the sediment, forest, PF, PS, and degraded sites. Toxicity and associated risks for human health were also evaluated. The areas highly impacted by wildfires and by artisanal gold mining activities showed higher concentrations for TEs and PAHs than the protected areas. Pb varied from 8 ± 4 to 224 ± 81 mg kg -1 , and total PAH concentration ranged between 880 ± 314 and 1350 ± 70 ng g -1 , at sites impacted by anthropogenic activities. Moreover, health risk assessments for TE and PAH indicated a potentially great risk for children and adults, via ingestion, inhalation, and dermal pathway. The carcinogenic risks exceeded reference values, for both TE and PAH, suggesting harmful conditions, especially for vulnerable groups, such as children and the elderly.
Supplementary Information: The online version contains supplementary material available at 10.1007/s11869-022-01248-2.
Competing Interests: Conflict of interestThe authors declare no competing interests.
(© The Author(s), under exclusive licence to Springer Nature B.V. 2022, Springer Nature or its licensor holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.)
Databáze: MEDLINE
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