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Determinação de contaminantes orgânicos em matrizes complexas utilizando método QuEChERS e cromatografia líquida acoplada à espectrometria de massas de alta resolução
(Universidade Federal de Santa Maria, 2016-03-04)
The presence of organic contaminants in the environment and in food have become a major concern due to the harmful effects to living organisms. Such contaminants may be pesticides used in agriculture for the control of ...
Determinação de tiocompostos por voltametria e coulometria em matrizes salinas
(Universidade Federal de Santa Maria, 2006-08-11)
The Laboratory of Support to Hemodialysis Clinics (LACHEM) has been investigating for many years the behaviour of many species in saline matrices as hemodialysis salts. In this work, the determination of the five thiocompounds ...
Estudo fitoquímico da raiz da espécie Melochia chamaedrys St. Hil
(Universidade Federal de Santa Maria, 2005-11-04)
Melochia chamaedrys St.Hil. is a plant that is locally known as douradinha , it is found in South America, more exactly in the south of Brazil, Argentina, and Uruguay. In the state of Rio Grande do Sul , the species M. ...
Decomposição de amostras botânicas e leite em pó utilizando peróxido de hidrogênio em sistema de alta pressão e posterior determinação elementar por ICP OES e ICP-MS
(Universidade Federal de Santa Maria, 2016-06-28)
Recently, there is an appeal to reduce the use of toxic reagents in a great effort for the development of analytical "green" methods. Thus, the paper proposes the elemental analysis of botanical and food samples without ...
Reações de 1,1,1-tricloro-4-metoxi-3-penten-2-ona com hidrazinas monosubstituídas
(Universidade Federal de Santa Maria, 2005-02-18)
The 1,1,1-trichloro-4-methoxy-3-penten-2-ona (CCl3COCH=CHOMe) reaction with hydrazines series (RNHNH2, where R = H, Me, tert-Bu, Ph, Ph(F)5, Ph-4-NO2, CO2Me e CONH2) yield to the pyrazoles N-substituted and derivatives ...
Determinação simultânea de ácido clavulânico e amoxicilina em formulações farmacêuticas utilizando técnicas de reflexão no infravermelho médio e métodos de regressão multivariados
(Universidade Federal de Santa Maria, 2009-08-14)
Clavulanic acid (AC) and amoxicillin (AMO) drugs are used in association and they are commercialized in Brazil as antibiotic agent. The simultaneous determination of
these drugs is, usually, carried out by high performance ...
Reatores de discos rotativos e tubular helicoidal na degradação fotocatalítica de diclofenaco e carga orgânica de efluente hospitalar
(Universidade Federal de Santa Maria, 2009-07-28)
In this study, the advanced oxidation process heterogeneous photocatalysis were used for the degradation of diclofenac and decrease of the organic load in the effluent from the emergency sector (PA) of the University ...
Síntese e caracterização de β-dicetonas 4,4,4-tricloro-1-aril-1,3-butanodionas e seus respectivos β-dicetonatos de cobre e ferro
(Universidade Federal de Santa Maria, 2009-07-31)
The present dissertation describe, initially, the synthesis of a new series of 4,4,4-trichloro-1-aryl-1,3-butanediones (3a-l) [Cl3CCOCHRCOR1], where R=H, CH3 and R1 = Ph, 4-CH3Ph, 3-OCH3Ph, 4-OCH3Ph, 4-FPh, 4-ClPh, 4-
BrPh, ...
Determinação de espécies de antimônio em antimoniato de meglumina
(Universidade Federal de Santa Maria, 2008-08-04)
In this study different methods for speciation of Sb(III) and Sb(V) in meglumine
antimoniate (NMG) were evaluated. Liquid chromatography (LC) combined or not
with hydride generation (HG) was investigated for separation of ...
Quantificação do alumínio administrado e excretado em recém-nascidos pré-termo em uma unidade de terapia intensiva neonatal
(Universidade Federal de Santa Maria, 2008-10-15)
Al is a ubiquitous element on the earth crust and is considered a non-essential
element for humans since it is not involved in any biochemical process. Aluminum
may act as a toxic species when it is introduced directly ...