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Efeitos do ultrassom na preparação de emulsões do fluconazol usando líquidos iônicos N-alquil-N-metilimidazolíneos
(Universidade Federal de Santa Maria, 2020-10-27)
Fluconazole is an active drug against a wide spectrum of species of fungi, this compound is used to treat
superficial and systemic fungal infections. However, this medicine has dissolution problems, which causes
limitations ...
Desenvolvimento de método multirresíduo para determinação de agrotóxicos em suco de uva integral utilizando método QuEChERS acetato e LC-MS/MS
(Universidade Federal de Santa Maria, 2021-02-26)
In the last century, pesticides have been widely used in agriculture due to the many benefits related to the quality and quantity of crops produced. Although they contribute to pest control and increased productivity, the ...
Agregação e força de interação cátion-ânion de líquidos iônicos dicatiônicos derivados do imidazol com os ânions ascorbato e ibuprofenato
(Universidade Federal de Santa Maria, 2021-01-29)
Imidazolium-based ionic liquids (ILs) demonstrate some advantages over the monocationic analogues, as higher fusion temperature, higher thermal stability and less toxicity. Dicationic ILs also form tridimensional aggregates ...
Síntese, caracterização e aplicação biológica de complexos derivados de bismuto(III) com ligantes do tipo aroiltioureias
(Universidade Federal de Santa Maria, 2020-03-06)
This work describes the synthesis, structural characterization and biological applications of four new bismuth(III) compounds with aroylthioureas as ligands: 1 - [Bi(La-O,S)3(HLa-S)], 2 - [Bi2(Lb-O,S)4(-Lb-12O,S,2 ...
Cromatografia líquida com espectrometria de massas para a determinação de ácidos orgânicos e ânions em água separada de emulsões de petróleo
(Universidade Federal de Santa Maria, 2020-03-31)
The main difficulty in relation to the methodology development in crude oil separated water is related to
the high concentration of salts (up to 150 g L-1 of Cl-) of this type of sample, which can cause
interferences in ...
Desenvolvimento de métodos de preparo de amostras para a posterior determinação de metais alcalinos, alcalino-terrosos e halogênios em petróleo
(Universidade Federal de Santa Maria, 2020-03-27)
In this work, four sample preparation methods were
investigated for further alkaline, alkaline earth
metals and halogens determination in crude oil: i ) microwave assisted wet digestion using a pressurized
digestion ...