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Extração por fluido supercrítico de alguns inseticidas carbamatos em amostras de batata, com determinação por HPLC/fluorescência e confirmação por HPLC/espectrometria de massas
(Sociedade Brasileira de Química, 2002-05-01)
Six supercritical fluid extraction (SFE) methods were tested, by varying the following operational parameters: CO2 pressure, time and temperature of extraction, type and proportion of static modifier, and Hydromatrix®/sample ...
Hidrólise do óleo de Azadirachta indica em água subcrítica e determinação da composição dos triacilglicerídeos e ácidos graxos por cromatografia gasosa de alta resolução a alta temperatura e cromatografia gasosa de alta resolução acoplada à espectrometria de massas
(Sociedade Brasileira de Química, 2010)
The development of modern analytical tools plays an important role in quality control. The main purpose of this study was to explore the use of subcritical water as a versatile analytical tool, employed simultaneously as ...
Standardization of a protocol to extract and analyze chlorophyll a and carotenoids in Gracilaria tenuistipitata Var. Liui. Zhang and Xia (Rhodophyta)
(Universidade de São Paulo, Instituto OceanográficoSão Paulo, 2014-01)
Chlorophyll a and carotenoids are important pigments in photosynthesis. Several studies have been published describing extraction and analysis protocols of these pigments, mainly in vascular plant species. This study ...
Isotope determination of sulfur by mass spectrometry in soil samplesDeterminação isotópica de enxofre por espectrometria de massas (irms) em amostras de solo
(Sociedade Brasileira de Ciência do Solo, 2012)
Sulphur plays an essential role in plants and is one of the main nutrients in several metabolic processes. It has four stable isotopes (32S, 33S, 34S, and 36S) with a natural abundance of 95.00, 0.76, 4.22, and 0.014 in ...
Xanthium strumarium L. antimicrobial activity and carboxyatractyloside analysis through electrospray ionization mass spectrometryAtividade antimicrobiana e análise de carboxiatractilosideo por espectrometria de massas com ionização por electrospray de Xanthium strumarium L
(Sociedade Brasileira de Plantas Medicinais, 2009)