Search Results - "Sevillano Cabeza, A"

New micromethod combining miniaturized matrix solid-phase dispersion and in-tube in-valve solid-phase microextraction for estimating polycyclic aromatic hydrocarbons in bivalves by Campíns-Falcó, P., Verdú-Andrés, J., Sevillano-Cabeza, A., Molins-Legua, C., Herráez-Hernández, R.

“…Miniaturized matrix solid-phase dispersion (MSPD) was developed for the extraction of common polycyclic aromatic hydrocarbons (PAHs) from bivalve samples (100…”
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In-tube solid-phase microextraction coupled by in valve mode to capillary LC-DAD: Improving detectability to multiresidue organic pollutants analysis in several whole waters by Campíns-Falcó, P., Verdú-Andrés, J., Sevillano-Cabeza, A., Herráez-Hernández, R., Molins-Legua, C., Moliner-Martinez, Y.

“…A simple and fast capillary chromatographic method has been developed to identify and quantify organic pollutants at sub-ppb levels in real water samples. The…”
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Rapid fluorimetric assay for primary amine groups in water samples by Sevillano Cabeza, A, Moliner Martinez, Y, Molins Legua, C, Campíns Falcó, P

“…Bond Elut C(18) solid-phase extraction cartridges were used for pre-concentration followed by derivatization with o-phthaldialdehyde-N-acetylcysteine (OPA-NAC)…”
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Creatinine determination in urine samples by batchwise kinetic procedure and flow injection analysis using the Jaffé reaction: chemometric study by Campins Falcó, P, Tortajada Genaro, L.A, Meseger Lloret, S, Blasco Gomez, F, Sevillano Cabeza, A, Molins Legua, C

“…The classical Jaffé reaction for the determination of creatinine in urine samples is tested. A comparative study of the main analytical characteristics…”
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Off-line dansylation of amines using C18 solid-phase packings : study of the fluorescence and chemiluminescence detection by post-column derivatization with oxalic acid bis(2, 4, 6-trichloro phenyl ester)/H2O2 in liquid chromatography. Determination of amphetamines in urine samples by MOLINS-LEGUA, C, CAMPINS-FALCO, P, CABEZA, A. S

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Automated pre-column derivatization of amines in biological samples with dansyl chloride and with or without post-column chemiluminescence formation by using TCPO-H2O2 by Molins-Legua, C, Campíns-Falcó, P, Sevillano-Cabeza, A

“…On-line automation of two different liquid chromatographic procedures, a pre-column derivatization system and a pre- and post-column system, in order to…”
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Liquid Chromatographic Analysis of Amphetamine and Related Compounds in Urine Using Solid-Phase Extraction and 3,5-Dinitrobenzoyl Chloride for Derivatization by Herráez-Hernández, Rosa, Campíns-Falcó, Pilar, Sevillano-Cabeza, Adela

“…A chromatographic method for the analysis of amphetamine and related compounds in urine using 3,5-dinitrobenzoyl chloride (3,5-DNB) as a labeling reagent is…”
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Improved detection limits for screening of diuretics by coupled liquid chromatography and ultraviolet-visible spectrophotometry by Campíns-Falcó, P, Herráez-Hernández, R, Sevillano-Cabeza, A

“…Experimental conditions have been studied in order to improve the sensitivity for the analysis of diuretics and probenecid in urine samples by high-performance…”
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Estimation of diuretic drugs in biological fluids by HPLC by HERRAEZ-HERNANDEZ, R, CAMPINS-FALCO, P, SEVILLANO-CABEZA, A

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In-tube solid-phase microextraction coupled by in valve mode to capillary LC-DAD: Improving detectability to multiresidue organic pollutants analysis in several whole waters: EXTRACTION TECHNIQUES by CAMPINS-FALCO, P, VERDU-ANDRES, J, SEVILLANO-CABEZA, A, HERRAEZ-HERNANDEZ, R, MOLINS-LEGUA, C, MOLINER-MARTINEZ, Y

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Determination of triamterene in urine by HPLC using fluorescence detection and column-switching by Falco, P C, Herraez-Hernandez, R, Sevillano-Cabeza, A

“…A liquid chromatographic method incorporating column-switching and fluorimetric detection for the determination of triamterene in untreated urine, is…”
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Determination of methamphetamine in urine samples with sodium 1,2-naphthoquinone-4-sulphonate by Molins Legua, C., Campins Falc, P., Sevillano Cabeza, A.

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Determination of vitamin B12 as cobalt by use of a catalytic-spectrophotometric method by Medina-Escriche, J, Hernández-Llorens, M L, Llobat-Estelles, M, Sevillano-Cabeza, A

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Sensitive determination of probenecid in urine samples by reversed-phase liquid chromatography and UV-visible detection using solid-phase extraction techniques for sample clean-up by CAMPINS-FALCO, P, HERRAEZ-HERNANDEZ, R, SEVILLANO-CABEZA, A

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Urine polyamines determination using dansyl chloride derivatization in solid-phase extraction cartridges and HPLC by Molins-Legua, C, Campíns-Falcó, P, Sevillano-Cabeza, A, Pedrón-Pons, M

“…The derivatization of biogenic amines such as putrescine, cadaverine, spermidine and spermine with dansyl chloride in solid phase extraction cartridges is…”
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o-Phthalaldehyde– N-acetylcysteine polyamine derivatives: formation and stability in solution and in C 18 supports by Campı́ns-Falcó, P, Molins-Legua, C, Sevillano-Cabeza, A, Tortajada Genaro, L.A

“…A comparative study of different derivatization procedures has been performed in order to improve the stability of the reaction products o-phthalaldehyde–…”
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Improved amphetamine and methamphetamine determination in urine by normal-phase high-performance liquid chromatography with sodium 1,2-naphthoquinone 4-sulphonate as derivatizing agent and solid-phase extraction for sample clean-up by Campíns Falcó, P., Molins Legua, C., Herráez Hernandez, R., Sevillano Cabeza, A.

“…Solid-phase extraction techniques were evaluated for the treatment of urine samples in the analysis of amphetamine and methamphetamine by normal-phase…”
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On-Line Derivatization into Precolumns for the Determination of Drugs by Liquid Chromatography and Column Switching:  Determination of Amphetamines in Urine by Herráez-Hernández, Rosa, Campíns-Falcó, Pilar, Sevillano-Cabeza, Adela

“…A chromatographic system for the on-line derivatization of drugs using column switching is described. The system uses a 20 mm × 2.1 mm i.d. precolumn packed…”
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A new derivatization procedure for the determination of cephalexin with 1,2-naphthoquinone 4-sulphonate in pharmaceutical and urine samples using solid-phase extraction cartridges and UV–visible detection by Gallo-Martinez, Luisa, Sevillano-Cabeza, Adela, Campı́ns-Falcó, Pilar, Bosch-Reig, Francisco

“…The present report shows how to derivatize cephalexin with 1,2-naphthoquinone-4-sulphonate (NQS) into solid-phase extraction cartridges (C 18) using UV–visible…”
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Off-line dansylation of amines using C 18 solid-phase packings: study of the fluorescence and chemiluminescence detection by post-column derivatization with oxalic acid bis(2, 4, 6-trichloro phenyl ester)/H 2O 2 in liquid chromatography. Determination of amphetamines in urine samples by Molins-Legua, C, Campı́ns-Falcó, P, Sevillano Cabeza, A

“…Dansylation of amines (primaries and secondaries) using C 18 solid-phase supports is described. The time of analysis and the handing sample have been markedly…”
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