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Determinação de resíduos de compostos orgânicos em água por microextração líquido-líquido dispersiva (DLLME) E GC-(TQ)MS/MS
(Universidade Federal de Santa Maria, 2010-11-29)
The use of chemicals, which generates a lot off benefits, is responsible for the contamination of soil, water and foods. The concern about contamination of surface
and ground water systems by pesticides has grown in ...
Validação e aplicação de método empregando QuEChERS modificado e GC-ECD para determinação de resíduos de pesticidas em grão e casca de arroz
(Universidade Federal de Santa Maria, 2010-08-12)
The current agriculture is characterized by the use of new technologies and equipment, the increased number of agronomic research and the use of a variety of inputs such as pesticides and fertilizers. All this is directly ...
Avaliação da técnica de extração sortiva em disco rotatório (RDSE) para determinação multirresíduo de agrotóxicos em água por UHPLC-MS/MS
(Universidade Federal de Santa Maria, 2017-02-24)
The use of pesticides in agriculture and urban areas has always been associated with advantages and disadvantages. As benefits, the increase of the productivity of crops and the control of vectors that cause diseases can ...
Resíduos de agrotóxicos em ameixa, maçã, pera e pêssego: desenvolvimento de métodos de análise e monitoramento
(Universidade Federal de Santa Maria, 2017-02-06)
In recent years, the indiscriminate use of pesticides and a lack of adoption of good
agricultural practices have been evidenced by the results of analyzes of residues of
pesticides in food. Thus, the goal of this work ...
Avaliação de sorventes para remoção de clorofila na determinação de agrotóxicos em espinafre empregando método QuEChERS e GC-ECD
(Universidade Federal de Santa Maria, 2017-03-30)
Vegetables are classified as greens when used on green parts and play an important role in human diet and nutrition. These foods are sources of vitamins, antioxidant polyphenols, essential amino acids, fibers, minerals, ...
Desenvolvimento de método de preparo de amostras de solução de nutrição enteral mediante sistema de digestão de alta pressão para posterior determinação multielementar
(Universidade Federal de Santa Maria, 2018-03-01)
In this work two methods of sample preparation for the digestion of enteral nutrition solution (SNE) using microwave assisted digestion (MWAD) in a single reaction chamber (SRC) system and subsequent multielement determination ...
Determinação de impurezas elementares em sulfato de bário por ICP-MS após volatilização empregando combustão iniciada por micro-ondas
(Universidade Federal de Santa Maria, 2018-07-25)
In order to volatilize analytes from inorganic samples, additives such as
microcrystalline cellulose have been applied. The cellulose is burnt and the heat
generated helps to volatilize the analytes of the matrix being, ...
Determinação multirresíduo de agrotóxicos em noz-pecã empregando método QuEChERS modificado e LC-MS/MS
(Universidade Federal de Santa Maria, 2019-08-09)
Pecan nuts is one of the few native nuts species from the American continent. The area in southern Brazil dedicated to pecan production is directly linked to the favorable climate of this region. Considering the commercialization ...
Determinação de resíduos de agrotóxicos em uva empregando método QuEChERS e UHPLC-MS/MS
(Universidade Federal de Santa Maria, 2019-02-28)
Grapes, classified as fruits play important role in human diet and nutrition. They are
sources of vitamins, polyphenols, essential amino acids, and a wide range of health
benefits. Grapes are extremely rich in pigments, ...
Determinação de resíduos de herbicidas em diferentes variedades de arroz (branco, preto e vermelho) empregando método QuEChERS e LC-MS/MS
(Universidade Federal de Santa Maria, 2019-02-28)
Rice is the main component of the basic diet of the world population. This food is of utmost importance for world food security. Therefore, aspects related to its production and consumption must be continuously monitored ...