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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 ...
Estudo da presença de fármacos como adulterantes em suplementos alimentares empregando detecção amperométrica e voltamétrica
(Universidade Federal de Santa Maria, 2018-02-28)
The use of food supplements grows around the world every day. In order to improve physical performance,
prevent disease, maintain and improve health, obtain and / or maintain desired body weight and still fill
nutritional ...
Desenvolvimento de método simples e rápido para determinação multiclasse de resíduos de medicamentos veterinários em rim, fígado e músculo bovino por UHPLC-MS/MS
(Universidade Federal de Santa Maria, 2017-03-10)
In food security area, the application of good agricultural practices is a growing concern for public health in the Brazilian domestic market and for the competitiveness countries in the external market. To ensure safety ...
Máquinas moleculares sintéticas: tetraalquil[2]rotaxanos como modelo no estudo de interações intramoleculares e intermoleculares
(Universidade Federal de Santa Maria, 2017-07-26)
This work presents the study of intramolecular and intermolecular interactions in tetraalkylsuccinamide[2]rotaxanes. These compounds have two submolecular components interlocked being obtained through a supramolecular ...
Determinação de hidrocarbonetos policíclicos aromáticos, níquel e vanádio em frações ácidas, básicas e neutras de asfaltos virgens e envelhecidos
(Universidade Federal de Santa Maria, 2017-08-15)
Asphalt cement (AC) is a dark-colored binder material, consisting of a mixture of naturally occurring petroleum hydrocarbons or obtained from distillation, which contains small fractions of sulfur, nitrogen, oxygen and ...
Líquidos iônicos dicatiônicos: propriedades físicoquímicas e interações com fármacos
(Universidade Federal de Santa Maria, 2018-01-26)
This study presents the influence of the molecular structure of dicationic ionic liquids
(ILs) derived from imidazolium ring, on physicochemical properties, self-association and
heteroassociation. Changes in solubility ...
Estrutura supramolecular de cristais multicomponentes derivados do ácido salicílico e do ibuprofeno
(Universidade Federal de Santa Maria, 2017-03-17)
This work presents the study of multicomponent crystals formed by salicylic acid (AS) with 1,2-Phenylenediamine (FEN) and 3-Amino-1,2-4-1H-triazole (TRIA) as amines; and rac-ibuprofen (IBU) with 3-amino-5-methyl-1H-pyrazole ...