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Determination of cocaine and benzoylecgonine by direct injection of human urine into a column-switching liquid chromatography system with diode-array detection
ArticleAbstract: A method for the determination of cocaine (COC) and benzoylecgonine (BZE) in human urine using a colPalabras claves:Benzoylecgonine, Cocaine, Column switching, HPLC, Sample preparation, Solid-phase extraction, Urine samplesAutores:Brunetto R., Cayama Y.D., García L., Maximo Gallignani, Obando M.Fuentes:googlescopusHeadspace gas chromatography-mass spectrometry determination of alkylpyrazines in cocoa liquor samples
ArticleAbstract: This paper proposes a fast, accurate, and quantitative method for alkylpyrazines determination in coPalabras claves:Alkylpyrazines, COCOA, Gas chromatography, headspace, Maillard reaction products, Mass spectrometer detectionAutores:Brunetto R., Cayama Y.D., Gómez A., Gutiérrez L., Maximo Gallignani, Méndez Y.C., Ramos G., Roa S.C., Zambrano A.Fuentes:googlescopus