Search Results - "Lancas, F.M"

Polydimethylsiloxane/polypyrrole stir bar sorptive extraction and liquid chromatography (SBSE/LC-UV) analysis of antidepressants in plasma samples by Melo, L.P., Nogueira, A.M., Lanças, F.M., Queiroz, M.E.C.

“…A new polymeric coating consisting of a dual-phase, polydimethylsiloxane (PDMS) and polypyrrole (PPY) was developed for the stir bar sorptive extraction (SBSE)…”
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HPTLC densitometric determination of flavonoids from Passiflora alata, P. edulis, P. incarnata and P. caerulea and comparison with HPLC method by Pereira, C.A.M, Yariwake, J.H, Lancas, F.M, Wauters, J.N, Tits, M, Angenot, L

“…A high-performance thin layer chromatographic (HPTLC) method was developed in order to determine quantitatively the flavonoids in leaves of Passiflora alata,…”
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Optimization of a methodology for the determination of organochlorine pesticides in surface water by SPME-GC/MS by Brondi, S.H.G, Lancas, F.M

“…In the present work experimental conditions were optimized for the analysis of organochlorine traces in water matrix using solid-phase microextraction (SPME)…”
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HPLC determination of pesticide residues widely employed in sugar-cane cultures in river water samples by Brondi, S.H.G, Lancas, F.M

“…Pesticides are substances used in agriculture, to increase the quantity and quality of agricultural products. They are toxic, cause environmental…”
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Modified headspace-SPME-GC device for sampling volatile compounds in acidic medium by Araújo, W. A., Lacerda, C. A., Cappelaro, E. A., Lanças, Fernando M.

“…Most of the existing analytical methods for determining dithiocarbamate pesticide residues utilize an acid decomposition step, which promotes the release of…”
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Supercritical fluid extraction of cymbopogon citratus (DC.) Stapf by SARGENTI, S. R, LANC, F. M

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Optimization of the Direct Liquefaction of Lignin Obtained from Sugar Cane Bagasse by Celeghini, RMS, Lancas, F M

“…In order to establish suitable conditions for the production of feedstocks or liquid fuels from a renewable source, a liquefaction process of lignin obtained…”
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The effects of temperature and density on the characteristics of the extracts from SCFE of a high-ash Brazilian coal by da Rocha, Sandro R.P., de Oliveira, JoséV., d'Ávila, Saul G., Pereira, Delma M., Lanças, Fernando M.

“…The effects of extraction temperature and density on the characteristics of the extracts from supercritical fluid extraction (SCFE) of a high-ash Brazilian…”
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Simple TLC-Screening of Acylglycerol Levels in Biodiesel as an Alternative to GC Determination by Fontana, J.D., Zagonel, G., Vechiatto, W.W., Costa, B.J., Laurindo, J.C., Fontana, R., Pelisson, L., Jorge, B.H., Lanças, F.M.

“…Thin layer chromatography (TLC) stained with hot acidic p-anisaldehyde, is an interesting, fast, and low-cost technique to monitor main lipid contaminants such…”
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Determination of Lamotrigine Simultaneously with Carbamazepine, Carbamazepine Epoxide, Phenytoin, Phenobarbital, and Primidone in Human Plasma by SPME-GC-TSD by Queiroz, M.E.C., Silva, S.M., Carvalho, D., Lanças, F.M.

“…A simple and rapid analytical method is presented for the determination of lamotrigine simultaneously with primidone, carbamazepine, carbamazepine epoxide,…”
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Determination of amitraz in canine plasma by solid-phase microextraction–gas chromatography with thermionic specific detection by Queiroz, M.E.C., Valadão, C.A.A., Farias, A., Carvalho, D., Lanças, F.M.

“…A simple and rapid analytical method is presented for the determination of amitraz in canine plasma samples using solid-phase microextraction (SPME) and gas…”
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Simplex optimization of extraction of soybean oil by supercritical pentane by LANCAS, F. M, QUEIROZ, M. E. C, SILVA, I. C. E

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HPLC/UV determination of sodium acifluorfen in tropical fish by Lancas, F.M, Sa, O.R. de, Rissato, S.R, Galhiane, M.S

“…This work reports the determination of sodium acifluorfen residue in fish species living in tropical rivers and lakes (Piaractus mesopotamicus). This…”
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Screening of acetogenin-producing plants in Brazilian flora: Annona and Rollinia seed oil as a source of the bioactive compounds and subproducts by Fontana, J.D, Almeida, E.R.A, Baron, M, Guimaraes, M.F, Deschamps, F.C, Schwartsmann, G, Cervi, A.C, Zanette, F, Vilegas, J, Lancas, F.M

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Coating of Solid-Phase Microextraction Fibers with Chemically Bonded Silica Particles: Selective Extraction of Polycyclic Aromatic Hydrocarbons from Drinking Water Samples by Rodrigues, R., Lacerda, C.A., Lanças, F.M.

“…In this study, solid-phase microextraction fibers coated with modified silica particles (5 µm dp) bonded to methyl (C1), hexyl (C6), octyl (C8), and polymeric…”
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Supercritical CO2 extraction of velutinol a from Mandevilla velutina (Apocynaceae) cultured cells and MALDI-TOF MS analysis by MARASCHIN, M, SUGUI, J. A, WOOD, K. V, BONHAM, C, LANCAS, F. M, ARAUJO, P. S, YUNES, R. A, VERPOORTE, R, FONTANA, J. D

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