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Determinação de cloro, enxofre, cobalto, níquel e vanádio em petróleos após combustão iniciada por micro-ondas em frascos descartáveis
(Universidade Federal de Santa Maria, 2020-11-26)
In this work, sample preparation methods based on microwave-induced combustion in disposable vessel (MIC-DV) for the determination of Cl, S by ICP OES, Co, Ni and V by ICP-MS in petroleum were developed. The main operational ...
Determinação multirresíduo de agrotóxicos em tomate, beterraba e cenoura empregando QuEChERS modificado e UHPLC-MS/MS
(Universidade Federal de Santa Maria, 2020-04-17)
Beet, carrot and tomato are foods with a high content of water, sugars and pigments, which are among the most cultivated and consumed vegetables worldwide and frequently contain pesticide residues. Therefore, a simple ...
Desenvolvimento de método para determinação multiclasse de resíduos de medicamentos veterinários em músculo suíno por UHPLC-MS/MS
(Universidade Federal de Santa Maria, 2022-04-08)
In swine farming, veterinary drugs are mainly applied to provide animal’s health. However, incorrect use can cause the presence of residues of these substances above the maximum limit allowed (MRL) in pork, and because of ...
Determinação multirresíduo de agrotóxicos em tabaco empregando método QuEChERS modificado e UHPLC-MS/MS
(Universidade Federal de Santa Maria, 2022-05-27)
Tobacco is the most widely grown non-food crop in the world, a wide variety of substances are used in it during and after its cultivation to protect it from pests, diseases and regulate its growth. Therefore, it is necessary ...
Determinação multirresíduo de agrotóxicos em abelha (Apis mellifera) empregando mini-QuEChERS e UHPLC-MS/MS
(Universidade Federal de Santa Maria, 2022-10-28)
Brazil has a favorable climate for extensive agricultural production, which is generally associated with the intensive use of pesticides. The harmful effect of pesticides on bee health is a topic of global concern. In the ...
Desenvolvimento de metodologia para análise de especiação de cromo em fertilizantes orgânicos
(Universidade Federal de Santa Maria, 2022-10-28)
In this work, a methodology was developed for the analysis of chromium speciation in organic fertilizer by liquid chromatography coupled to inductively coupled plasma mass spectrometry (LC-ICP-MS). For the evaluation of ...
Determinação multiclasse de contaminantes em suplemento alimentar à base de óleo de peixe por GC-MS/MS
(Universidade Federal de Santa Maria, 2022-10-26)
In recent years, the demand for fish oil-based supplements has increased significantly, which
can be mainly attributed to the high concentrations of polyunsaturated fatty acids present in
fish, which are associated with ...