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Application of preparative high-speed counter-current chromatography for the separation of flavonoids from the leaves of Byrsonima crassa Niedenzu (IK)
(Elsevier B.V., 2004-04-30)
The methanolic extract of the leaves of the medicinal plant Byrsonima crassa (Malpighiaceae) contain flavonoids with antioxidant activity. They were separated in a preparative scale using high-speed counter-current ...
Methods of extraction and/or concentration of compounds found in biological fluids for subsequent chromatographic determination.
(Soc Brasileira QuimicaSao PauloBrasil, 2001)
Extraction and pre-concentration of volatile organic compounds by membrane permeation for chromatography analysis.
(Soc Brasileira QuimicaSao PauloBrasil, 2000)
Analysis of polychlorinated biphenyls in transformer oils by automated online coupling reversed phase liquid chromatography-gas chromatography using the through oven transfer adsorption desorption (TOTAD) Interface
(Taylor & Francis Ltd, 2012-03)
An automated method for the direct analysis of polychlorinated biphenyls (PCBs) in transformer oil is presented. The proposed method uses the TOTAD (through oven transfer adsorption desorption) interface for the on-line ...