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Especiação de compostos de arsênio em águas e fluidos biológicos empregando pré-tratamento fotoquímico e métodos voltamétricos
(Universidade Federal de Santa Maria, 2007-12-21)
The presence of arsenic as a contaminant in water and biological fluids has been studied in recent years due to the high toxicity of this element. In this work a method for the selective determination of arsenic species ...
Investigação de complexos binucleares de K+ E CU(II) com ligantes 1,3-diariltriazenidos simétricos
(Universidade Federal de Santa Maria, 2006-12-15)
At work present it synthesized and determined itself the molecular structure of a copper complex (II) and another of potassium in which both involve triazenides ligands
monocatenados previously deprotonated. The reaction ...
Síntese e propriedades fotofísicas de 2,8-di(aril/heteroaril)-imidazolo[1,2-a][1,8]naftiridinas trifluormetil substituídas
(Universidade Federal de Santa Maria, 2022-11-11)
Não foi possível inserir o abstract.
Aplicação de polieletrólitos para a separação de metais em efluentes da suinocultura
(Universidade Federal de Santa Maria, 2007-02-09)
The increase on swine livestock activity demands profitable resources and environmentally sustainable for the treatment, disposal and the residual water reuse. Due to the high wastewater volume, they have a huge pollutant ...
Estudo dos óleos voláteis de plantas medicinais da família Asteraceae do Rio Grande do Sul: Baccharidastrum triplinervium, Baccharis pentodonta, Pluchea sagittalis e Eupatorium buniifolium
(Universidade Federal de Santa Maria, 2007-07-26)
In this study four species were studied: Baccharidastrum triplinervium, Baccharis pentodonta, Pluchea sagittalis and Eupatorium buniifolium, all species belong to Asteraceae family. The essential oils of these four species ...
Síntese de ácidos 3-alcóxi-3-cianopropanóicos, ácidos 2-ciano tetraidrofuran(2h-piran)-3-óicos e sua aplicação na obtenção dos respectivos ácidos succinâmicos e succínicos
(Universidade Federal de Santa Maria, 2007-02-23)
This work presents the synthesis of a series of 3-alkoxy-3-cyanopropanoic acids and 2-cyanotetrahydrofuran(2H-pyran)-3-carboxylic acids of general formula HO2CCH(R2)CR1(OR)CN, where R/R2= Et/H, Et/Me, -(CH2)2-, -(CH2)3-, ...
Investigação dos efeitos estruturais de ligantes 1,3- diariltriazenidos simétricos orto-substituídos em complexos de mercúrio (II)
(Universidade Federal de Santa Maria, 2007-01-26)
This work was accomplished with the interest in the synthesis of ortosubstituted ligands, with special prominence to the moiety __CF3, __Br and __NO2 and later the complexação with Hg(II). The first obtained result was the ...
Determinação voltamétrica de compostos de enxofre de baixo peso molecular em amostras de asfalto
(Universidade Federal de Santa Maria, 2008-07-25)
The content of sulfur compounds in asphalt is related to parameters of quality as reactivity, corrosiveness, toxicity and potential polluter, among others. In this work, a method for simultaneous determination of inorganic ...
β-Enaminonas, 5-hidróxi-4,5-diidropirazóis e 5-Hidróxi-4,5-diidroisoxazóis halometilsubstituídos: estudo molecular por difração de raios-x
(Universidade Federal de Santa Maria, 2008-08-08)
The molecular study by X-ray diffraction of β-aminovinyl ketones
[R3C(O)CH=C(R1)N(R4R5), onde R3 = CF3, CCl3, CHCl2; R1 = H, Me; R4 = H; R5 =
benzyl, Ph, 5-methylisoxazol-3-yl; R4, R5 = -(CH2)4-, -(CH2)2O(CH2)2-], methyl ...
Supramolecularidade de triazenos assimétricos dissubstituídos 4-(etoxicarbonilfenil)-2-(halofenil) e complexos de Ni(II), Cu(II) e Hg(II)
(Universidade Federal de Santa Maria, 2008-05-02)
Triazenes and/or triazenido ligands, strategically substituted by terminal aryl groups [-N=NN(H)-] or (-N3 --) chains and containing halogen in the ortho position and ester in the para position, were evaluated in ...