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Interaction between humic substances and metallic ions: A selectivity study of humic substances and their possible therapeutic application
(2007-09-06)
The complexation capacity of humic substances extracted from peat samples taken from the Mogi River in Ribeirao Preto, SP, Brazil, was determined using metal ions (Al(III), Pb(II), Cr(VI) and Cd(II)), yielding the following ...
Interaction between humic substances and metallic ions: A selectivity study of humic substances and their possible therapeutic application
(2007-09-06)
The complexation capacity of humic substances extracted from peat samples taken from the Mogi River in Ribeirao Preto, SP, Brazil, was determined using metal ions (Al(III), Pb(II), Cr(VI) and Cd(II)), yielding the following ...
Aquatic Humic Substances: Relationship Between Origin and Complexing Capacity
(Springer, 2018-05-01)
Aiming to determine the relationship between source and complexing capacity, humic substances obtained from three sites (Sorocaba and Itapanhau Brasilian rivers, and Xochimilco Lake in Mexico) were studied. Copper, manganese, ...
Modelling proton and metal binding to humic substances with the NICA-EPN model
(Csiro Publishing, 2014-06)
The mathematical modelling of metal cation–natural organic matter interactions is a fundamental tool in predicting the state and fate of pollutants in the environment. In this work, the binding of protons and metal cations ...
The role of sediment humic substances in cu and cr concentrations in the pore water of a typical area of cultivation of sugar cane in São Paulo, Brazil
(2013-08-01)
Humic substances (HS) have an important environmental property, the capacity of complexing metal species. Given this property, studies to understand the behavior of HS with metals are of great relevance. Thus, a study was ...
Influence of the Extractant on the Complexing Capacity of Humic Substances from Peat for Macro and Micronutrients Using Continuous Flow: Agricultural Application and Environmental Impacts
(Soc Brasileira Quimica, 2013-12-01)
The aim of the present work was to optimize a procedure for extraction of humic substances (HS) from peat, using continuous flow with different extractants (NaOH, KOH and Na4P2O7). The influence of extractant on the ...
The influence of aquatic humic substances from an area of sugarcane and orange on the dynamics of chromium ions in the environment
(2012-08-01)
The northwest region of São Paulo State is a typical agricultural region with crops of sugarcane and oranges predominating, being chromium ions of environmental interest. Studies of the role of aquatic humic substances ...
Relative lability of trace metals complexed in aquatic humic substances using ion-exchanger cellulose-hyphan
(1997-12-01)
The purpose of this paper is to characterize the lability/inertness metal fractions complexed by aquatic humic substances (HS) in relation to pH, complexation time, and HS concentration. HS were preconcentrated by ...
Relative lability of trace metals complexed in aquatic humic substances using ion-exchanger cellulose-hyphan
(1997-12-01)
The purpose of this paper is to characterize the lability/inertness metal fractions complexed by aquatic humic substances (HS) in relation to pH, complexation time, and HS concentration. HS were preconcentrated by ...