Copper Acid Base Properties
Mostrando 1-7 de 7 artigos, teses e dissertações.
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1. Copper(II) Nitroaromatic Schiff Base Complexes: Synthesis, Biological Activity and Their Interaction with DNA and Albumins
Copper(II) complexes of the Schiff base ligands 2-((5-nitrofuran-2-yl)methyleneamino)phenol (HL1) and 2-(4-nitrobenzylideneamino)phenol (HL2) were prepared and characterized using physicochemical and spectroscopic techniques. In these complexes the Schiff base ligands acted as a bidentate donor bound to Cu2+ through the oxygen and nitrogen atoms in the depro
J. Braz. Chem. Soc.. Publicado em: 2017-01
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2. Síntese de bisporfirinas contendo o espaçador 2,2-bipiridina: modelos na elaboração de sensores luminescentes de íons metálicos / Synthesis of bisporphyrins held together by the 2,2-bipyridine spacer: models in the elaboration of luminescent sensors for metal ions
In this work have been synthesized bisporphyrins held together by means of amide linkage at the 4,4position of 2,2-bipyridine, reacting the mono-functionalised aminophenyl-porphyrin (NH2PTriPP) and 4,4-diacid chloride bipyridine (DACBipy). A preliminary study was conducted for the establishment of the reaction conditions for the attainment of mono(nitropheny
Publicado em: 2008
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3. Propriedades ácido-base e de complexação de ácidos húmico e fúlvico isolados de vermicomposto
Proton binding properties of humic and fulvic acids were studied by potentiometric titration. Carboxylic groups were the predominant ionizable sites in comparison to phenolic and amine groups. Total acidity of fulvic acid was 12 x 10-3 mol g-1, a number significantly higher than that obtained for humic acid (5.2 x 10-3 mol g-1). Copper ion binding was evalua
Química Nova. Publicado em: 2007-10
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4. Humic substances extracted from vermicompost. Acid base and complexing properties with Cu(II) / Isolamento, purificação e caracterização de substâncias húmicas isoladas de vermicomposto. Propriedades ácido-base e de complexação com íons Cu(II)
Estudaram-se as propriedades ácido base e de complexação com íons Cu(II) dos ácidos húmico (AH) e fúlvico (AF) extraídos de vermicomposto. O isolamento e a purificação foram realizados de acordo com o método descrito pela Sociedade Internacional de Substâncias Húmicas (IHSS). Estudaram-se as propriedades ácido-base por titulação potenciométr
Publicado em: 2005
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5. Desenvolvimento de dispositivo fotÃnico para monitoramento de metais poluentes em recursos hÃdricos
In this work they were studied some properties of a polymeric of the class of the superabsorbents (SAP), that is used broadly in the industry of products of personal care. This polymeric one that is a derived of the acrylic acid formed by reticulation of nets crosslink, an excellent agent complexante was shown, for presenting in its structure groups amids an
Publicado em: 2004
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6. Isolamento, purificação e estudos de complexação de substâncias húmicas / Isolation, purification and complexation studies of humic substances
The aim of the present work was to study the humic substances, with emphasis to the humic acid (HA) fraction isolated from sediments of the Tietê River, collected at the Barra Bonita reservoir. The extraction of the humic acid was performed according to the procedure proposed by the International Humic Substances Society (I.H.S.S.). A commercial humic acid
Publicado em: 1998
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7. Surface Charge Properties of and Cu(II) Adsorption by Spores of the Marine Bacillus sp. Strain SG-1
Spores of marine Bacillus sp. strain SG-1 are capable of oxidizing Mn(II) and Co(II), which results in the precipitation of Mn(III, IV) and Co(III) oxides and hydroxides on the spore surface. The spores also bind other heavy metals; however, little is known about the mechanism and capacity of this metal binding. In this study the characteristics of the spore
American Society for Microbiology.