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Itens para a visualização no momento 21-30 of 35
Determinação de resíduos de agrotóxicos em fisalis (Physalis peruaviana L.) empregando QuEChERS modificado e UHPLC-MS/MS
(Universidade Federal de Santa Maria, 2016-02-29)
In this study a fast and effective multiresidue method for the determination of 42
pesticides in goldenberry was developed and validated. A modified QuEChERS
method was established for sample preparation followed by ...
Determinação multirresíduo de agrotóxicos em água empregando SPE e UHPLC-MS/MS
(Universidade Federal de Santa Maria, 2020-03-02)
The presence of organic pollutants in water resources is a major concern. The most commonly reported of these pollutants are generated by domestic, agricultural and industrial activities. Organic pollutants produce a wide ...
Determinação de resíduos de agrotóxicos em café verde empregando QuEChERS e UHPLC-MS/MS
(Universidade Federal de Santa Maria, 2020-03-02)
Coffee is one of the most consumed beverages in the world and due to climatic diversity, reliefs, altitudes and latitudes Brazil is able to produce good quality coffee beans. Brazil is currently the largest producer and ...
Estudo de método para determinação de resíduos de agrotóxicos em uva por GC-MS
(Universidade Federal de Santa Maria, 2013-07-29)
The regulatory agencies are becoming increasingly stringent as regards the quality of the food. Thus, the development of analytical methods that help monitoring of pesticide residues, and it is essential in routine ...
Determinação multirresíduo de agrotóxicos em água empregando microextração líquido-líquido dispersiva (DLLME) e GC-MS/MS
(Universidade Federal de Santa Maria, 2015-06-19)
The use of pesticides is related to effectiveness in pest control, as well as productivity
in food production in agriculture. However, the use of these substances in high
amounts is directly affecting water resources, ...
Avaliação da técnica de extração de SPE e GC-(EI)-MS/MS na análise de agrotóxicos em água de lavoura de arroz irrigado
(Universidade Federal de Santa Maria, 2012-02-14)
It is known that heavy use of pesticides, especially herbicides and
insecticides, associated with the improper management of irrigation water
can result in pesticide runoff out the crops to the waters streams, rivers ...
Agrotóxicos em milho: otimização e validação de método multirresíduo empregando GC-MS/MS
(Universidade Federal de Santa Maria, 2013-02-28)
Due to the complexity of its matrix, more efficient methods have been studied
for the determination of pesticide residues in maize. The use of QuEChERS method
coupled to low temperature clean up technique has showed ...
Validação de método multirresídual e monitoramento de resíduos de agrotóxicos por GC-μECD em méis do estado do Rio Grande do Sul
(Universidade Federal de Santa Maria, 2019-03-12)
Due to the complexity of matrices such as honey and the low concentrations of pesticides,
there is a great need for the development of efficient and reliable analytical methods for the
identification and quantification ...
Determinação multiclasse de resíduos de agrotóxicos e medicamentos veterinários em carnes por LC-MS/MS
(Universidade Federal de Santa Maria, 2012-03-23)
The agribusiness has been incorporating new technologies in the production of
meat, including good management of farms, health, balanced diet, breeding and
integrated production. Allied to this, there is a growing concern ...
Métodos individual e multirresidual para determinação de agrotóxicos em camas biológicas por cromatografia gasosa acoplada à espectrometria de massas
(Universidade Federal de Santa Maria, 2018-06-08)
Besides the possibility to perform determination of a large number of pesticides in only a single chromatographyc analysis using multiresidual methods, sometimes, due to diversity in pesticides chemical composition and ...