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Itens para a visualização no momento 251-260 of 278
Hidratação reversível de complexos fenilseleninatos para- substituído de cobalto(II)
(Universidade Federal de Santa Maria, 2013-08-30)
In this study eight novel compounds were synthesized and characterized from pre-ligands pheylseleninic acid 1, 4-t-butiphenyilseleninic acid 2, 4-methylphenyilseninic acid 3 and 4-clorophenylseleninic acid 4. The ability ...
Síntese e caracterização de iodetos de diteluroéteres - análise da estrutura supramolecular
(Universidade Federal de Santa Maria, 2012-02-28)
This work describes the synthesis and characterization of thirteen new compounds belonging to the class of ditelluroethers iodides. The starting materials (ditelluroethers) were synthesized by a method few mentioned in the ...
Síntese de 2-Benzil(metil)tio-6-aril(metil)pirimidinas-4-carboxilato de Etila e seus Ácidos Derivados
(Universidade Federal de Santa Maria, 2012-08-10)
This work presents a simple and versatile synthetic strategy for the preparation of a novel series of Ethyl 2-Benzyl(methyl)tiopyrimidines-4-carboxylate 6-substituted and their acids derivatives.
The Ethyl 2-Benzyl(meth ...
Síntese one pot de 1,3,4-oxadiazóis derivados de L-aminoácidos e benzoil-hidrazidas
(Universidade Federal de Santa Maria, 2012-07-20)
In the following work, a range of 1,3,4-oxadiazles 2,5-disubstituted 3 was
prepared, using a one pot approach, from L-amino acids 1(a-e) and 2-benzoylhydrazides,
using POCl3 as dehydrating agent.
The study involved the ...
Desenvolvimento e validação de métodos voltamétricos sequenciais para a determinação de elementos em matrizes complexas
(Universidade Federal de Santa Maria, 2013-08-07)
Toxic elements are in continuous accumulation in the environment mainly due to anthropogenic activities. In this work, a voltammetric method of sequential analysis for application in matrices of complex characteristics was ...
Combustão iniciada por micro-ondas com radiação focalizada (FMIC) para decomposição de condimentos de origem vegetal para posterior determinação de metais por ICP OES
(Universidade Federal de Santa Maria, 2011-03-18)
In this work the focused microwave induced combustion (FMIC) method was
proposed for decomposition of spices, as Origanum vulgare L., Petrosolium
sativum, Ocimum basilicum, Coriandrum sativum L. e Allium fistolosum for ...
Síntese e caracterização de complexos de Cu(I), Cu(II) E Au(I) com ligantes triazenidos contendo substituintes triazóis
(Universidade Federal de Santa Maria, 2013-11-29)
Triazenido ions are isoelectronic to amidinato anions,[R'N C(R)=NR']- and have a broad versatility in coordination chemistry. Metal complexes including triazenido ligands find applications in various areas of chemistry. ...
Síntese, análise estrutural e aplicação de novos complexos de Manganês como miméticos da SOD
(Universidade Federal de Santa Maria, 2012-01-15)
This work presents an study related to the synthesis and structural analysis of manganese complex with ligands of bases Schiff type, derivate from pyridoxine. Was used like starting material for the synthesis of ligands ...
Emprego DAETV-ICP OES para a determinação de impurezas inorgânicas em produtos farmacêuticos
(Universidade Federal de Santa Maria, 2013-03-01)
In this study a method for As, Cd, Cr, Cu, Mn, Mo, Ni, Pb, Pd, Pt, Rh, Ru and V determination in pharmaceuticals products by electrothermal vaporization inductively coupled plasma optical emission spectrometry (ETV-ICP ...
Determinação mutirresíduo de agrotóxicos em pimentão utilizando método QuEChERS modificado e UHPLC-MS/MS
(Universidade Federal de Santa Maria, 2013-02-28)
In recent years, the indiscriminate use of pesticides and non-adoption of good
agricultural practices have been evidenced by the results of analysis of pesticide
residues in food, such as sweet pepper, one of Brazilian ...