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Seasonal studies of aquatic humic substances from Amazon rivers: characterization and interaction with Cu (II), Fe (II), and Al (III) using EEM-PARAFAC and 2D FTIR correlation analyses.
Constantino, Isabela Carreira; Bento, Lucas Raimundo; Santos, Vinicius Sarracini; da Silva, Leila Soares; Tadini, Amanda Maria; Mounier, Stéphane; Piccolo, Alessandro; Spaccini, Riccardo; Cornélio, Marinônio Lopes; Paschoal, Fabiana Maria Monteiro; Junior, Ézio Sargentini; Moreira, Altair Benedito; Bisinoti, Márcia Cristina.
Afiliação
  • Constantino IC; Department of Chemistry and Environmental Sciences, Institute of Biosciences, Humanities and Exact Sciences (IBILCE), São Paulo State University (UNESP), São José Do Rio Preto, São Paulo, Brazil.
  • Bento LR; Department of Chemistry and Environmental Sciences, Institute of Biosciences, Humanities and Exact Sciences (IBILCE), São Paulo State University (UNESP), São José Do Rio Preto, São Paulo, Brazil.
  • Santos VS; The Interdepartmental Research Centre On Nuclear Magnetic Resonance for the Environment, Agroo-Food and New Materials (CERMANU), University of Naples Federico II, Portici, Naples, Italy.
  • da Silva LS; Department of Chemistry and Environmental Sciences, Institute of Biosciences, Humanities and Exact Sciences (IBILCE), São Paulo State University (UNESP), São José Do Rio Preto, São Paulo, Brazil.
  • Tadini AM; Department of Chemistry and Environmental Sciences, Institute of Biosciences, Humanities and Exact Sciences (IBILCE), São Paulo State University (UNESP), São José Do Rio Preto, São Paulo, Brazil.
  • Mounier S; Brazilian Agricultural Research Corporation, São Carlos, São Paulo, Brazil.
  • Piccolo A; Mediterranean Institute of Oceanography (MIO), University Toulon, Toulon, France.
  • Spaccini R; The Interdepartmental Research Centre On Nuclear Magnetic Resonance for the Environment, Agroo-Food and New Materials (CERMANU), University of Naples Federico II, Portici, Naples, Italy.
  • Cornélio ML; The Interdepartmental Research Centre On Nuclear Magnetic Resonance for the Environment, Agroo-Food and New Materials (CERMANU), University of Naples Federico II, Portici, Naples, Italy.
  • Paschoal FMM; Department of Physics, Institute of Biosciences, Humanities and Exact Sciences (IBILCE), São Paulo State University (UNESP), São José Do Rio Preto, São Paulo, Brazil.
  • Junior ÉS; Institute of Exact Sciences and Technology, Federal University of Amazonas (UFAM), Itacoatiara, Amazonas, Brazil.
  • Moreira AB; National Institute of Amazonian Research (INPA), Manaus, Amazonas, Brazil.
  • Bisinoti MC; Department of Chemistry and Environmental Sciences, Institute of Biosciences, Humanities and Exact Sciences (IBILCE), São Paulo State University (UNESP), São José Do Rio Preto, São Paulo, Brazil.
Environ Monit Assess ; 196(7): 595, 2024 Jun 04.
Article em En | MEDLINE | ID: mdl-38833198
ABSTRACT
Aquatic humic substances (AHS) are defined as an important components of organic matter, being composed as small molecules in a supramolecular structure and can interact with metallic ions, thereby altering the bioavailability of these species. To better understand this behavior, AHS were extracted and characterized from Negro River, located near Manaus city and Carú River, that is situated in Itacoatiara city, an area experiencing increasing anthropogenic actions; both were characterized as blackwater rivers. The AHS were characterized by 13C nuclear magnetic ressonance and thermochemolysis GC-MS to obtain structural characteristics. Interaction studies with Cu (II), Al (III), and Fe (III) were investigated using fluorescence spectroscopy applied to parallel factor analysis (PARAFAC) and two-dimensional correlation spectroscopy with Fourier transform infrared spectroscopy (2D-COS FTIR). The AHS from dry season had more aromatic fractions not derived from lignin and had higher content of alkyls moities from microbial sources and vegetal tissues of autochthonous origin, while AHS isolated in the rainy season showed more metals in its molecular architecture, lignin units, and polysacharide structures. The study showed that AHS composition from rainy season were able to interact with Al (III), Fe (III), and Cu (II). Two fluorescent components were identified as responsible for interaction C1 (blue-shifted) and C2 (red-shifted). C1 showed higher complexation capacities but with lower complexation stability constants (KML ranged from 0.3 to 7.9 × 105) than C2 (KML ranged from 3.1 to 10.0 × 105). 2D-COS FTIR showed that the COO- and C-O in phenolic were the most important functional groups for interaction with studied metallic ions.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Estações do Ano / Poluentes Químicos da Água / Monitoramento Ambiental / Cobre / Rios / Alumínio / Substâncias Húmicas País/Região como assunto: America do sul / Brasil Idioma: En Revista: Environ Monit Assess Assunto da revista: SAUDE AMBIENTAL Ano de publicação: 2024 Tipo de documento: Article País de afiliação: Brasil País de publicação: Holanda
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Estações do Ano / Poluentes Químicos da Água / Monitoramento Ambiental / Cobre / Rios / Alumínio / Substâncias Húmicas País/Região como assunto: America do sul / Brasil Idioma: En Revista: Environ Monit Assess Assunto da revista: SAUDE AMBIENTAL Ano de publicação: 2024 Tipo de documento: Article País de afiliação: Brasil País de publicação: Holanda