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Comparação entre os métodos de extração quechers e miniluke modificados na extração de resíduos de pesticidas piretróides em tomate empregando GC×GC-μECD
(Universidade Federal de Santa Maria, 2009-08-29)
In this study, two methods frequently used in the extraction of residues of pesticides in fruits and vegetables, the QuEChERS method and the mini-Luke
method, were compared in order to optimize and validate these methods ...
Avaliação de um modulador a ar comprimido para GC×GC e sua aplicação para determinação de resíduos de pesticidas piretróides em uva
(Universidade Federal de Santa Maria, 2008-02-22)
In this study, a new modulator that is simple, robust and presents low operation costs was developed. This modulator uses compressed air to cool two small portions of the second chromatographic column of a GC×GC system. ...
Estudo da estabilidade a campo dos pesticidas carbofurano e quincloraque em água de lavoura de arroz irrigado empregando SPE e HPLC-DAD
(Universidade Federal de Santa Maria, 2007-07-24)
The use of pesticides to control pests, diseases and weeds in crops of agricultural interest aims at the increase of production. The degradation of applied compounds or their conversion into other products, does not ...
Desenvolvimento e validação de método multirresíduo para determinação de pesticidas em arroz polido utilizando método QuEChERS modificado, clean-up dispersivo e GC-MS (NCI-SIM)
(Universidade Federal de Santa Maria, 2007-03-01)
The rice is the main component of the basic diet of the world-wide population, is therefore, of extreme importance for the food security. In function of this, related aspects its production and comsumption must continuously ...
Desenvolvimento e validação de método para determinação de etilenotiouréia em urina empregando HPLC UV
(Universidade Federal de Santa Maria, 2008-03-28)
In order to supply the world-wilde demand for food, it is essential to use the pesticides to protect the crops against pests and diseases. But the indiscriminate and injudicious use of these compounds have resulted in ...