Now showing items 1-6 of 6
Characterization of the Interactions between Endocrine Disruptors and Aquatic Humic Substances from Tropical Rivers
(Journal of the Brazilian Chemical Society, 2011-01-01) [Artigo]
Interactions between two endocrine disruptors (ED) and aquatic humic substances (AHS) from tropical rivers were studied using an ultrafiltration system equipped with a 1 kDa cut-off cellulose membrane to separate free ED ...
Caracterização estrutural das substâncias húmicas aquáticas extraídas dos rios itapanhaú e ribeira de iguape
(Química Nova, 2011-01-01) [Artigo]
The knowledge of the structure characteristic of the Organic Matter is important for the understanding of the natural process. In this context aquatic humic substances (principal fraction) were isolated from water sample ...
Kinetics and Adsorption Isotherms of Bisphenol A, Estrone, 17 beta-Estradiol, and 17 alpha-Ethinylestradiol in Tropical Sediment Samples
(Water, Air, and Soil Pollution, 2012-01-01) [Artigo]
The sorption of four endocrine disruptors, bisphenol A (BPA), estrone (E1), 17 beta-estradiol (E2), and 17 alpha-ethinylestradiol (EE2) in tropical sediment samples was studied in batch mode under different conditions of ...
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
(Journal of the Brazilian Chemical Society, 2013-12-01) [Artigo]
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 ...
Effect of a nanostructured dendrimer-naloxonazine complex on endogenous opioid peptides mu(1) receptor-mediated post-ictal antinociception
(Nanomedicine-nanotechnology Biology and Medicine, 2011-12-01) [Artigo]
The aim of this study was to investigate the capacity of the host dendrimer DAB-Am-16 as a drug carrier to reduce the time required for the encapsulated naloxonaxine to establish an irreversible covalent bond with mu(1)-opioid ...
Peat humic substances enriched with nutrients for agricultural applications: competion between nutrients and non-essential metals present in tropical soils
(Journal of Hazardous Materials, 2010-05-15) [Artigo]
Improved agricultural productivity, and reduction of environmental impacts, require studies of the interactions between different soil components. Fertilizers marketed as “organic” or “natural”, such as peats or humic ...