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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 ...
Resíduos de agrotóxicos em água potável usando SPE e determinação rápida por LC-MS/MS e GC-MS/MS
(Universidade Federal de Santa Maria, 2012-08-31)
The use of pesticides always has been associated with the effective control of pests
or invasive weeds to ensure an increase in the food production. However, the indiscriminate
use of these substances has caused the ...
Determinação multirresíduo de agrotóxicos por GC-MS/MS em plantas medicinais empregadas na produção de fitoterápicos
(Universidade Federal de Santa Maria, 2018-08-06)
The use of exotic and Brazilian plants as a resource for therapeutic purposes in the prevention and treatment of diseases, have been evaluated as to the possibility of extracting plant active compounds, as well as the ...
Determinação de resíduos de agrotóxicos em leite em pó empregando dispersão da matriz em fase sólida, GC-MS/MS e UHPLC-MS/MS
(Universidade Federal de Santa Maria, 2019-07-31)
The milk powder is a food of complex composition (protein, fat, carbohydrate, vitamins,
etc.). It plays a fundamental role in child nutrition due to nutritional factors related to
cognitive ability. In recent years, ...
Estudo de método multirresíduo para determinação de agrotóxicos em águas superficiais por SPE e GC-MS/MS
(Universidade Federal de Santa Maria, 2013-07-30)
Modern agriculture started using different techniques and materials in order to
minimize losses in production and meet the growing demand for food, combining
productivity and profitability. However, the indiscriminate ...
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, ...
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 ...
Método multirresíduo para agrotóxicos e compostos relacionados em ar empregando trapeamento em sorvente polimérico e GC-MS/MS
(Universidade Federal de Santa Maria, 2013-10-25)
While pesticides are applied to crops in order to control pests and thereby increase productivity, these substances can undergo processes such as volatilization, dispersion and transport, reaching the atmosphere, soil and ...