Bioaccumulation of potentially toxic elements in floating aquatic macrophytes of Guarapiranga Reservoir, São Paulo
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2017
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60 YEARS OF IEA-R1: INTERNATIONAL WORKSHOP ON UTILIZATION OF RESEARCH REACTORS
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Resumo
Macrophytes species play a relevant role in aquatic environments once they incorporate
elements that can be a suitable tool for accumulation studies, mainly when it
comes to an important and strategic water supply. The main goal of this study was
to establish concentration levels of As, Cd, Co, Cr, Cu, Hg, Mn, Ni, Pb, Se and Zn
in four species of floating aquatic macrophytes samples at three sampling sites along
the Guarapiranga Reservoir. For this purpose, five analytical techniques were tested
such as Inductively Coupled Plasma Optical Emission Spectrometry (ICP OES), Inductively
Coupled Plasma Mass Spectrometry (ICP MS), Graphite Furnace Atomic
Absorption Spectrometry (GF AAS), Thermal Decomposition, Amalgamation, and
Atomic Absorption Spectrophotometry and the multielemental characterization of
this matrix was undertaken using Neutron Activation Analysis technique (NAA). The
results obtained were compared to reference values for aquatic plants and most of
the elements exceeded these values, especially at sampling site 01, which is located
near the Embu-Guaãu River flow, the main tributary of the reservoir. In relation
to comparison among sampling sites and macrophytes species, One-way Anova in
Statistical Package for Social Sciences (SPSS) was performed. Output showed significant
differences among sampling sites, but not for macrophytes species. Factor
Analysis (FA) with Principal Components (PC) extraction method was performed on
data using SPSS software. Output suggested possible common source from the As,
Co, Cr, Hg, Ni, Pb and Se elements, which composed PC1. PC2 included Cd, Cu and Zn elements and it should be noticed that Cu is frequently used as algicide in
the reservoir, as CuSO4. PC3 included only Mn, suggesting distinct behavior of this
element. Eventually, this work should be extended to monitoring programs.
Como referenciar
COUTINHO, S.N.; FIGUEIREDO, A.M.G.; QUINAGLIA, G.A. Bioaccumulation of potentially toxic elements in floating aquatic macrophytes of Guarapiranga Reservoir, São Paulo. In: 60 YEARS OF IEA-R1: INTERNATIONAL WORKSHOP ON UTILIZATION OF RESEARCH REACTORS, November 28 - December 01, 2017, São Paulo, SP. Abstract... São Paulo, SP: Instituto de Pesquisas Energéticas e Nucleares, 2017. p. 48-49. Disponível em: http://repositorio.ipen.br/handle/123456789/28746. Acesso em: 27 Mar 2026.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.