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Validação de metodologia para determinação de hidrametilnona por cromatografia gasosa com detector de massas (GC-MS)
(Universidade Estadual Paulista (Unesp), 2015-09-16)
This method was developed and validated according to standards of ANVISA for qualitative and quantitative determination of Hydramethylnone content in technical product and formulated from this.
Identification (GC and GC-MS) of unsaturated acetates in Elasmopalpus lignosellus and their biological activity (GC-EAD and EAG)
(Journal of Separation Science, 2017)
Constraints to Uranus’ Great Collision IV. The Origin of Prospero
(EDP Science, 2008)
Context. It is widely accepted that the large obliquity of Uranus is the result of a great tangential collision (GC) with an Earth size
proto-planet at the end of the accretion process. The impulse imparted by the GC had ...
Analyses by GC-MS and GC-MS-MS of the hantzsch synthesis products using hydroxy- and methoxy-aromatic aldehydes
(PERGAMON-ELSEVIER SCIENCE, 2007-05-09)
El mass spectra of products of the dihydropyridine Hantzsch synthesis using hydroxy and methoxy aldehydes as starting materials are reported. The reaction products (C-4 hydroxy- and methoxyphenyl-1,4-dihydropyridines and ...
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 MariaBRQuímicaUFSMPrograma de Pós-Graduação em Química, 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 MariaBRQuímicaUFSMPrograma de Pós-Graduação em Química, 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. ...
Alkaloids of Erythroxylum lucidum stem-bark
(1997)
Thirteen alkaloids were identified from the stem-bark of Erythroxylum lucidum by GC-MS. Seven of these have not been reported previously in the genus Erythroxylum. Most of them are precursors or intermediates in the ...