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Micotoxinas em matrizes de milho e trigo: validação de método analítico por ULPC-MS/MS e monitoramento em diferentes pontos da cadeia produtiva e comercial
(Universidade Federal de Santa Maria, 2014-02-24)
This study aims to validate an analytical multi-mycotoxin method using UPLC-MS/MS for 12 mycotoxins determination in wheat and maize matrices. The parameters evaluated for the validation were: calibration curve and linearity, ...
(Benzo[d]azolil)guanidinas: reações de ciclocondensação com trifluoracetil enol éteres na síntese de N-(pirimidinil)-1H-(benzo[d]azolil)aminas e N-derivados
(Universidade Federal de Santa Maria, 2014-08-05)
The present research describes a simple and efficient procedure to synthesize a novel series of twenty N-(pyrimidinyl)-1H-(benzo[d]azolyl)amines, from the cyclocondensation reaction of (benzo[d]azolyl)guanidines with ...
Síntese de 1,3-imidazois-2,4,5-trissubstituídos derivados de calcogenofenos
(Universidade Federal de Santa Maria, 2014-08-24)
In the following work, a series of new 2,4,5 trisubstituted 1,3-imidazoles 11 and 12 were synthesized from 1-aryl-2-(chalcogenophen-2-yl)-1,2-diketones targeting the union of two classes of interesting heterocycles the ...
Síntese de 1,1,1-trifluoro-4-metoxi-3-alquen-2-onas funcionalizadas e 1,2-azóis derivados
(Universidade Federal de Santa Maria, 2014-03-03)
This work describes the application of the method of trifluoroacetic anhydride acetal
acylation to four new functionalized ketones: 6-methyl-5-hepten-2-one, 4-phenyl-4-
oxobutanoic acid (3-benzoylpropionic acid), ...
Síntese e Caracterização de Novos Compostos Derivados de Bis(4-Aminobenzenoselenolato) de Mercúrio(II) e Bis(4-N,N-Dimetil-aminobenzenoselenolato) de Mercúrio(II)
(Universidade Federal de Santa Maria, 2014-07-18)
This work presents the synthesis and structural analysis of the first compounds obtained through the use of the building blocks Mercury(II) bis(4-Aminobenzeneselenolate) Hg(SeC6H4NH2-4)2 and Mercury(II) bis(4-N,N-Dim ...
Aroilbis(N,N-dietiltioureatos) de cádmio (II) e chumbo (II): síntese e caracterização
(Universidade Federal de Santa Maria, 2014-07-18)
This work introduces the synthesis of two novel ligands belonging to the aroylbis(thiourea) class to study the spacer group influence in the complexes structure. Five membered rings were utilized as spacer groups such as ...
Síntese de novos azóis derivados da 1,1- difenilacetona
(Universidade Federal de Santa Maria, 2014-08-07)
This work describes an efficient method to obtaining new heterocycles from the reaction of acetalization of the ketonic carbonyl, followed by acylation of the enolether, generated in situ from the acetal derivative of ...
Avaliação de adsorventes sólidos para a remoção de derivados de HPAs em solução
(Universidade Federal de Santa Maria, 2014-03-12)
Polycyclic aromatic hydrocarbons, nitrogen and oxygen (Nitro-PAHs and Oxy-PAHs) compose the class of compounds where a hetero atom of nitrogen and oxygen, respectively, is present in the constitution of the HPA. The inclusion ...
Determinação voltamétrica de zinco, cádmio, chumbo, cobre, selênio e manganês em ovos de galinha
(Universidade Federal de Santa Maria, 2014-03-13)
The quality of the food deserves great attention due to its the influence on human nutrition and health. Food is the primary source of essential elements for humans, but also the main source of exposure to toxic elements. ...
Condensação de knoevenagel na síntese de novos sistemas heteroaroil-cumarínicos trifluormetil substituídos
(Universidade Federal de Santa Maria, 2014-03-19)
With the aim to verify the influence of the presence of the trifluoromethyl group and the heterocyclic precursor in the heteroaroyl-coumarin synthesis, this dissertation describes firstly a methodology optimization to ...