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Itens para a visualização no momento 11-20 of 22
Desenvolvimento e validação de método multirresíduo empregando GC-MS (NCI-SIM) para determinação de pesticidas em grãos de trigo e seus produtos processados
(Universidade Federal de Santa Maria, 2008-03-07)
In this study a multiresidue method for the determination of 24 pesticides in wheat, flour, bran and bread using GC-MS (NCI-SIM) mode was developed and validated. The objective of this study was to evaluate the pesticides ...
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 ...
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 ...
Estudo de métodos empregando HPLC-DAD e LC-MS/MS para a determinação de resíduos de herbicidas em água e solo do cultivo de arroz irrigado
(Universidade Federal de Santa Maria, 2007-12-20)
The irrigated agriculture of Rio Grande do Sul (RS) it is responsible for about 50% of the Brazilian production of rice, and the success of the production depends, generally, of the application of chemical substances. Many ...
Estudo de métodos empregando extração em fase sólida e análise por HPLC-DAD e GC-ECD para a determinação de resíduos de pesticidas em águas e da degradação a campo
(Universidade Federal de Santa Maria, 2007-02-26)
The culture of irrigated rice generates a great impact to the environment, both in the amount and the quality of waters. In this study, a methodology was developed and validated for the determination, in waters, of residues ...
Desenvolvimento e validação de método para determinação multiresíduo de agrotóxicos em urina empregando método QuEChERS e LC-MS/MS
(Universidade Federal de Santa Maria, 2022-09-16)
Pesticides have been widely used in food crops to control pests, weeds, fungi, etc. The
indiscriminate use of these organic compounds has contributed to the increase in
cases of intoxication in humans, which can lead to ...
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 ...
Determinação de resíduos e contaminantes em rações empregando extração sólido-líquido e UHPLC-MS/MS
(Universidade Federal de Santa Maria, 2022-11-18)
Animal feed is considered as any material of vegetable, animal or mineral origin
suitable to be consumed as food, provided it meets the quality and identity standards,
as well as sanitary and nutritional standards. Also ...