Cadmium Complexes
Mostrando 1-12 de 42 artigos, teses e dissertações.
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1. Determination of Copper and Cadmium in Petroleum Produced Formation Water by Electrothermal Atomic Absorption Spectrometry after Cloud Point Extraction
Cloud point extraction (CPE) in association with graphite furnace atomic absorption spectrometry (GF AAS) was proposed for preconcentration and quantification of trace amounts of copper and cadmium in samples of saline produced formation water from petroleum exploration. The procedure was based on the formation of hydrophobic complexes of the analytes with 1
J. Braz. Chem. Soc.. Publicado em: 2020-06
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2. Synthesis and Characterization of a New Unsymmetrical Potentially Pentadentate Schiff Base Ligand and Related Complexes with Manganese(II), Nickel(II), Copper(II), Zinc(II) and Cadmium(II)
New unsymmetric thioether Schiff base amine, 2-(2-aminoethylthio)-N-(thiophene-2-ylmethylene)aniline was prepared by reaction of 2-aminothiophenol with N-(2-bromoethyl)phthalimide and then by thiophene-2-carbaldehyde. Then, the phthalimide group converted to the amine by hydrazine hydrate. The new potentially pentadentate N3S2 donor unsymmetrical Schiff base
J. Braz. Chem. Soc.. Publicado em: 2017-05
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3. Tilapia (Oreochromis niloticus) as a Biondicator of Copper and Cadmium Toxicity. A Bioavailability Approach
The acute toxicity of copper and cadmium in Oreochromis niloticus was evaluated through a 96 h static assay. Precipitation of Cu and co-precipitation of Cd in the presence of Cu were noted, being indicative of differences in nominal and actual concentrations of metals. Under these conditions, LC50-96h was determined as 3.53 mg L-1Cu, 20.1 mg L-1 Cd and 1.36
J. Braz. Chem. Soc.. Publicado em: 2017-01
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4. Multivariate Optimization of a Simultaneous Cloud Point Extraction Procedure of Cd, Cu and Ni from Sediments Samples and Determination by ICP OES
A simultaneous preconcentration method for cadmium, copper and nickel in samples of sediments and determination by inductively coupled plasma optical emission spectrometry was developed. The method is based on the extraction of the metals as complexes formed with 2-(5-bromo-2-pyridylazo)-5-(diethylamino)-phenol (5-Br-PADAP) at cloud point of the nonionic sur
J. Braz. Chem. Soc.. Publicado em: 2016-04
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5. Adsorption of Transition Metal Chlorides by Silica with Grafted 1-n-Propyl-3-Methylimidazolium Chloride
Silica with grafted 1-n-propyl-3-methylimidazolium chloride was investigated as adsorbent for the removal of cobalt(II), copper(II), zinc(II), cadmium(II) and mercury(II) chlorides from alcoholic and aqueous solutions. The adsorption proceeds via the formation of metal-chloride anionic complexes detained near the grafted organic cations as counterions. This
J. Braz. Chem. Soc.. Publicado em: 2015-06
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6. Cadmium and Lead Determination in Freshwater and Hemodialysis Solutions by Thermospray Flame Furnace Atomic Absorption Spectrometry Following Cloud Point Extraction
Cloud point extraction was employed for the separation and preconcentration of cadmium and lead prior to the determination by thermospray flame atomic absorption spectrometry. Di-2- pyridyl ketone salicyloylhydrazone (DPKSH) was used as complexing agent and the cadmium and lead complexes were extracted from the aqueous phase by the Triton X-114 surfactant. T
J. Braz. Chem. Soc.. Publicado em: 2015-03
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7. Síntese e caracterização de complexos binucleares de cádmio (II) com ligante oxima / Synthesis and characterization of binucleated cadmium complexes (II) with the ligand oxime
Neste trabalho são apresentadas e discutidas a síntese e a caracterização do complexo de sódio e de dois complexos binucleares de cádmio (II) com a isatina-3-oxima como ligante. A estrutura cristalina e molecular do complexo isatina-3-oxima de sódio apresenta a fórmula empírica C8H5N2O2Na(C8H6N2O2)2.2H2O, o que pode ser descrito como um polímero de
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 18/07/2011
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8. Synthesis and characterization of [Cd8Cl2Se(SePh)12(PCy3)2]•2.5CH3OH
Neste artigo estamos apresentando a síntese do composto [Cd8Cl2(μ4-Se)(SePh)12(PCy3)2]·2.5CH3OH pela reação de Cd(SePh)2 com CdCl2 e triciclohexilfosfina em metanol em um reator de aço inoxidável sob condições solvotérmicas a 130 °C. Esse composto corresponde ao último resultado de uma série sistemática de reações e visando ao crescimento de
Publicado em: 2011
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9. Study of complexes of cadmium with some L-amino acids and vitamin-C by voltammetric technique
Voltammetric technique was used to study the binary and ternary complexes of cadmium with L-amino acids and vitamin-C (L-ascorbic acid) at pH =7.30 ± 0.01, µ = 1.0M KNO3 at 25ºC and 35ºC. Cd (II) formed 1:1:1, 1:1:2 and 1:2:1 complexes with L-lysine, L-ornithine, L-threonine, L-serine, L-phenylglycine, L-phenylalanine, L-glutamic acid and L-aspartic acid
Eclética Química. Publicado em: 2008
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10. Stability constants and thermodynamic parameters of cadmium complexes with sulfonamides and cephapirin
Stability constant (log beta) and thermodynamic parameters of Cd2+ complexes with sulfonamide and cephapirin were determined by Polarographic technique at pH = 7.30 ± 0.01 and µ = 1.0 M KNO3 at 250°C. The sulfonamides were sulfadiazine, sulfisoxazole, sulfamethaxazole, sulfamethazine, sulfathiazole, sulfacetamide and sulfanilamide used as primary ligands
Eclética Química. Publicado em: 2008
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11. Complexes of thallium(I) and cadmium(II) with dipeptides of L-phenylalanylglycine and Glycyl-L-phenylalanine
As constantes de estabilidade dos complexos de íons tálio(I) e cádmio(II) com dipeptídeos de glicil-L-fenilalanina e L-fenilalanilglicina foram determinadas em solução aquosa a 25 ºC e meio iônico 0,1 mol dm-3 usando uma combinação de técnicas potenciométricas e espectrofotométricas. Perclorato de sódio foi usado para manter a força iônica. A
Journal of the Brazilian Chemical Society. Publicado em: 2007
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12. SÍNTESE, ESTRUTURA E AVALIAÇÃO DA ATIVIDADE ANTIMICROBIANA DE COMPLEXOS METÁLICOS COM SULFAMETOXAZOL / SYNTHESIS, STRUCTURE AND ANTIMICROBIAL ACTIVITY EVALUATION OF METALLIC COMPLEXES WITH SULFAMETHOXAZOLE
This work presents the study of compounds obtained from interaction of sulfamethoxazole with copper, cadmium, mercury and nickel acetates, gold triphenilphosphine acetate / chloride and with silver chloride. The synthesis and the characterization of the new compounds were accomplished by the analyses of the reactivity, the coordinative behavior and to the co
Publicado em: 2007