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metadata.dc.type: Artigo de Periódico
Issue Date: Jun-2018
metadata.dc.creator: SIQUEIRA, Gilmar Wanzeller
APRILE, Fabio Marques
IRION, Georg Friedrich
BRAGA, Elisabete S.
Title: Mercury in the Amazon basin: Human influence or natural geological pattern?
metadata.dc.description.sponsorship: CAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
Citation: SIQUEIRA, Gilmar Wanzeller et al. Mercury in the Amazon basin: Human influence or natural geological pattern?. Journal of South American Earth Sciences, v. 86, p. 193-199. Disponível em: Acesso em:.
Abstract: One of the main scientific discussions on Hg levels in the Amazon region concerns the possible sources of this element. This research was conducted between 1999 and 2015 in the region between the coastal zone and the Amazonian Continental Shelf (ACS). The total Hg concentration values found in the sediments in ACS ranged from 14 to 160 ng g−1. The main contribution of metallic elements to ACS comes from the sedimentary load transported by the Amazon River basin. Among the main tributaries of the Amazon River, the Negro River, which for decades has had mining activity, and the Madeira River, which is still present today, although currently in decline. The analysis of the total Hg results associated with the suspended solids load, both in the Continental Amazon and ACS, suggest that the anthropogenic influence, although evident in sites sources of pollution, is not the main source of total Hg for ACS, and in this case the participation of the natural contributions should be attributed from the natural geological activity in the regional soil, which is considered as naturally enriched in Hg
Keywords: Total mercury
Metallic contamination
Gold mining
Series/Report no.: Journal of South American Earth Sciences
ISSN: 0895-9811 Brasil
Publisher: Universidade Federal do Pará
metadata.dc.publisher.initials: UFPA
metadata.dc.rights: Acesso Aberto
Appears in Collections:Artigos Científicos - ICEN

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