Search Results - "Nogueira, J. M."

Determination of trace levels of parabens in real matrices by bar adsorptive microextraction using selective sorbent phases by Almeida, C., Nogueira, J.M.F.

“…•An alternative methodology for trace level analysis of parabens-type compounds.•The comparison of the selectivity of different sorbent phases.•Development and…”
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Activated carbons for the adsorption of ibuprofen by Mestre, A.S., Pires, J., Nogueira, J.M.F., Carvalho, A.P.

“…Powdered activated carbons prepared from cork waste were studied for the ibuprofen removal from liquid phase. Two carbons were used: CAC obtained by chemical…”
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Determination of trace levels of benzophenone-type ultra-violet filters in real matrices by bar adsorptive micro-extraction using selective sorbent phases by Almeida, C., Stępkowska, A., Alegre, A., Nogueira, J.M.F.

“…•An alternative technique for trace level analysis of UV filters.•Both activated carbons and polymers can be used for UV filter analysis.•Validation of a novel…”
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Determination of steroid sex hormones in water and urine matrices by stir bar sorptive extraction and liquid chromatography with diode array detection by Almeida, C., Nogueira, J.M.F.

“…In this study, stir bar sorptive extraction and liquid desorption followed by high performance liquid chromatography with diode array detection…”
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Adsorptive micro-extraction techniques—Novel analytical tools for trace levels of polar solutes in aqueous media by Neng, N.R., Silva, A.R.M., Nogueira, J.M.F.

“…A novel enrichment technique, adsorptive μ-extraction (AμE), is proposed for trace analysis of polar solutes in aqueous media. The preparation, stability tests…”
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Advances in stir bar sorptive extraction for the determination of acidic pharmaceuticals in environmental water matrices : Comparison between polyurethane and polydimethylsiloxane polymeric phases by Silva, Ana Rita M, Portugal, Fátima C.M, Nogueira, J.M.F

“…Stir bar sorptive extraction with polyurethane (PU) and polydimethylsiloxane (PDMS) polymeric phases followed by high-performance liquid chromatography with…”
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Development of a bar adsorptive micro-extraction–large-volume injection–gas chromatography–mass spectrometric method for pharmaceuticals and personal care products in environmental water matrices by Neng, N. R., Nogueira, J. M. F.

“…The combination of bar adsorptive micro-extraction using activated carbon (AC) and polystyrene–divinylbenzene copolymer (PS-DVB) sorbent phases, followed by…”
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Plant extracts with anti-inflammatory properties—A new approach for characterization of their bioactive compounds and establishment of structure–antioxidant activity relationships by Amaral, Sónia, Mira, Lurdes, Nogueira, J.M.F., Silva, Alda Pereira da, Helena Florêncio, M.

“…The ESI-MS/MS methodology proposed can be used as a model procedure for identification and characterization of unknowns without the prerequisite for standard…”
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Impact of nosocomial polymicrobial bloodstream infections on the outcome in critically ill patients by Sancho, S., Artero, A., Zaragoza, R., Camarena, J. J., González, R., Nogueira, J. M.

“…The aims of this study were to compare the clinical and microbiological characteristics from patients with polymicrobial bloodstream infections (BSI) to those…”
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New approach on trace analysis of triclosan in personal care products, biological and environmental matrices by Silva, Ana Rita M., Nogueira, J.M.F.

“…Stir bar sorptive extraction and liquid desorption followed by high performance liquid chromatography with diode array detection (SBSE-LD-LC-DAD) is proposed…”
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Antioxidant and Cytotoxic Activities of Carob Tree Fruit Pulps Are Strongly Influenced by Gender and Cultivar by Custódio, L, Fernandes, E, Escapa, A. L, Fajardo, A, Aligué, R, Alberício, F, Neng, N. R, Nogueira, J. M. F, Romano, A

“…Extracts from fruit pulps of six female cultivars and two hermaphrodite Portuguese carob trees [(Ceratonia siliqua L., Fabaceae)] exhibited strong antioxidant…”
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Development, optimisation and application of polyurethane foams as new polymeric phases for stir bar sorptive extraction by Neng, N.R., Pinto, M.L., Pires, J., Marcos, P.M., Nogueira, J.M.F.

“…In this contribution, polyurethane foams are proposed as new polymeric phases for stir bar sorptive extraction (SBSE). Assays performed for polyurethane…”
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Stir-bar-sorptive extraction and liquid desorption combined with large-volume injection gas chromatography-mass spectrometry for ultra-trace analysis of musk compounds in environmental water matrices by Silva, Ana Rita M, Nogueira, J. M. F

“…Stir-bar-sorptive extraction with liquid desorption followed by large-volume injection and capillary gas chromatography coupled to mass spectrometry in…”
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Cork-based activated carbons as supported adsorbent materials for trace level analysis of ibuprofen and clofibric acid in environmental and biological matrices by Neng, N.R., Mestre, A.S., Carvalho, A.P., Nogueira, J.M.F.

“…In this contribution, powdered activated carbons (ACs) from cork waste were supported for bar adsorptive micro-extraction (BAμE), as novel adsorbent phases for…”
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Determination of short-chain carbonyl compounds in drinking water matrices by bar adsorptive micro-extraction (BAμE) with in situ derivatization by Neng, N. R, Nogueira, J. M. F

“…In this contribution, bar adsorptive micro-extraction using polystyrene-divinylbenzene sorbent phase and in situ derivatization with pentafluorophenyl…”
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Use of experimental design in the optimization of stir bar sorptive extraction for the determination of polybrominated diphenyl ethers in environmental matrices by Serôdio, P., Cabral, M. Salomé, Nogueira, J.M.F.

“…Stir bar sorptive extraction and liquid desorption (LD) followed by large volume injection and capillary gas chromatography coupled to mass spectrometry…”
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Determination of organochlorine pesticides in vegetable matrices by stir bar sorptive extraction with liquid desorption and large volume injection-gas chromatography–mass spectrometry towards compliance with European Union directives by Barriada-Pereira, M., Serôdio, P., González-Castro, M.J., Nogueira, J.M.F.

“…A novel analytical approach to determine trace levels of 20 organochlorine pesticides (OCPs) in nine vegetable matrices (lettuce, spinach, green bean, green…”
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The influence of inadequate empirical antimicrobial treatment on patients with bloodstream infections in an intensive care unit by Zaragoza, R., Artero, A., Camarena, J.J., Sancho, S., González, R., Nogueira, J.M.

“…To determine the occurrence of inadequate antimicrobial therapy among critically ill patients with bacteremia and the factors associated with it, to identify…”
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Association of Serum Uric Acid With Graft Survival After Kidney Transplantation: A Time‐Varying Analysis by Haririan, A., Metireddy, M., Cangro, C., Nogueira, J. M., Rasetto, F., Cooper, M., Klassen, D. K., Weir, M. R.

“…The association of serum uric acid (UA) with kidney transplant outcomes is uncertain. We examined the predictive value of UA during the first year…”
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Powdered activated carbons as effective phases for bar adsorptive micro-extraction (BAμE) to monitor levels of triazinic herbicides in environmental water matrices by Neng, N.R., Mestre, A.S., Carvalho, A.P., Nogueira, J.M.F.

“…Bar adsorptive micro-extraction using three powdered activated carbons (ACs) as adsorbent phases followed by liquid desorption and high performance liquid…”
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