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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 ...
Matrix effect on butyltin analysis of sediments and fish tissues by GC-PFPD
(2013-07-23)
Butyltin (BTs) quantification in environmental matrices can be affected by interfering species found primarily in complex matrices,such as sediment and biota tissues. This study investigated matrix effects in analytical ...
Matrix effect on butyltin analysis of sediments and fish tissues by GC-PFPD
(2013-07-23)
Butyltin (BTs) quantification in environmental matrices can be affected by interfering species found primarily in complex matrices,such as sediment and biota tissues. This study investigated matrix effects in analytical ...
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. ...
Quantitative analysis of phytosterols in Aristotelia chilensis (Maqui) leaves using GC/MS
(Universiti Putra Malaysia, 2016)
© 2008 IFRJ.The prevalence of metabolic syndrome, hypertension, heart disease and diabetes has been increasing rapidly in Chile in recent years. The rate of increase has paralleled the replacement of traditional Mediterranean ...
Comparação entre métodos cromatográficos, empregando GC-ECD, GC-FPD e GC-MS, e espectrofotométrico para determinação de ditiocarbamatos em alface
(Universidade Federal de Santa MariaBRQuímicaUFSMPrograma de Pós-Graduação em Química, 2005-08-03)
Brazil is the third largest market for pesticide sales in the world, with almost 400 active ingredients registered in the country, including five dithiocarbamates. This pesticide class consists of very important protective ...