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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 ...
Síntese de 2-(1,4,5,6-tetraidropiridin-3-il)-2-oxoacetato de etila 1,6-dissubstituídas via mecanismo ANRORC
(Universidade Federal de Santa Maria, 2013-03-18)
This paper presents a synthetic strategy for the preparation of two series of novel 1,6-disubstituted Ethyl 2-(1,4,5,6-tetrahydropyridin-3-yl)-2-oxoacetate from the reaction of the cyclic enone ethyl 2-(6-ethoxy-5 ...
Interações intermoleculares e topologia molecular no empacotamento cristalino de 3-amino-4-halo-5-metilisoxazóis
(Universidade Federal de Santa Maria, 2013-02-26)
In this work is described the intermolecular interactions and the molecular
topology present in the crystal packing of 3-amine-4-halo-5-methylisoxazoles. First
was described the obtention of the 3-amine-4-halo-5-methylisoxazoles ...
Determinação de halogênios por cromatografia de íons e ICP-MS em sulfato de bário após decomposição por piroidrólise
(Universidade Federal de Santa Maria, 2013-02-28)
In this work pyrohydrolysis is proposed as pretreatment of barium sulfate and subsequent determination of F, Cl, Br and I by ion chromatography (IC) and inductively coupled plasma mass spectrometry (ICP-MS). After the ...
Espécies de arsênio em moluscos bivalves determinadas por LC-ICP-MS E LC-CVG-ICP-MS após extração assistida por microondas
(Universidade Federal de Santa Maria, 2013-03-05)
In this work, the aim of this study is to evaluate sample preparation procedures and
liquid chromatography-inductively coupled plasma mass spectrometry (LC-ICP-MS) and LC
coupled to chemical vapor generation (CVG) and ...
Síntese de 4-trifluormetil-5-(propan-1-ol-3-il)-1H-piridin-2-iminas N-substituídas
(Universidade Federal de Santa Maria, 2013-03-08)
This work presents a simple and accessible synthetic route for the
preparation of a series, of nineteen new N-substituted 4-trifluormethyl-5-
(propan-1-ol-3-yl)-pyridin-2-(1H)-imines, obtained from the reaction between ...
Síntese e caracterização estrutural de novos haletos de telúrio e organiltelúrio(IV) com bromo e cloro
(Universidade Federal de Santa Maria, 2013-09-18)
This work describes the synthesis and characterization of new tellurium and organiltellurium
(IV) halides, whereas the halogens chlorine and bromine were used. Despite being less stable
than the analogous iodine, these ...
Síntese de 1h-1,2,3-triazóis trialoacetil substituídos análogos estruturais da rufinamida
(Universidade Federal de Santa Maria, 2013-02-15)
The present dissertation describes a chemical methodology for the synthesis of three series containing fourteen new molecules of trifluoro(chloro)methyl substituted 1H-1,2,3-triazoles, which are structural analogues to the ...
Efeito da topologia molecular no empacotamento cristalino de Pirazolo[1,5-a]pirimidinas
(Universidade Federal de Santa Maria, 2013-02-27)
This study shows the influence of the molecular topology of the crystal of a series of 14 pyrazolo[1,5-a]pyrimidines. The topological data were obtained from X-ray diffraction data and energy stabilization were determined ...
Síntese e análise estrutural de compostos derivados de calcogenolatos metálicos MER (M = HgII, PdII; E = Se, Te; R = aril)
(Universidade Federal de Santa Maria, 2013-01-18)
This work presents a study related to the synthesis and structural
analysis of compounds derivatives from metal chalcogenolates - MER (M = HgII,
PdII; E = Se, Te; R = aryl). In the first step of this work were ...