[PDF] Top 20 Quím. Nova vol.37 número8

... was incubated in darkness conditions (37 °C, 5 min), and the absorbance was measured at 593 nm. In the FRAP assay, the blue-colored Fe(II)- tripyridyltriazine compound was oxidized to the colorless Fe(III) form. ... See full document

... The values of COD removal attained in the presence of chloride ions were very similar for both anodes, when a similar oxidation pathway was mediated by chloro oxidant species; moreov[r] ... See full document

... A potentiometric Nickel sensor was prepared using 2-hydroxy-1-naphthylidene- N -cyanoacetohydrazone as electro-active material and epoxy resin as a binding material.. A membrane compose[r] ... See full document

... Therefore, 4.0% (w/v) BaCl 2 solution is used as the precipitating reagent because it results in higher analytical signals and better linearity for the r-FIA system than those obtain[r] ... See full document

... Atendiendo a que aún se siguen buscando nuevos dímeros de ácido fórmico, 10 en el presente trabajo se empleó una metodología desarrollada recientemente en la exploración de las superf[r] ... See full document

... The bioanalytical method developed was applied in the precli- nical pharmacokinetic investigation of the OLA-LNC after intrave- nous 2.5 mg kg −1 dosing to Wistar rats in comparison wit[r] ... See full document

... dard addition method was used for analyzing the EP sample and the electronic absorption spectrum of the solution was recorded in the range of 220–320 nm.. Acetaminophen tablet sample.[r] ... See full document

... PHYSICOCHEMICAL PROPERTIES OF LECITHIN-BASED NANOEMULSIONS OBTAINED BY SPONTANEOUS EMULSIFICATION OR HIGH-PRESSURE HOMOGENIZATION. Roselena S[r] ... See full document

... LIGANDLESS CLOUD POINT EXTRACTION OF TRACE AMOUNTS OF PALLADIUM AND RHODIUM IN ROAD DUST SAMPLES USING SPAN 80 PRIOR TO THEIR DETERMINATION BY FLAME ATOMIC ABSORPTION SPECTROMETRY.. Ma[r] ... See full document

... was used with paddles at 50 rpm and bath temperature maintained at 37 ± 0.5 °C. Five hundred millilitres of freshly prepared and degassed citrate buffer solution pH 3.0 was used as the dissolution medium. ... See full document

... An aliquot of the hexane phase (6 g) was subjected to silica gel column chromatography and eluted with hexane, ethyl acetate and then methanol, gradually increasing the polarity, yielding 239 fractions which were ... See full document

... and 209 °C. The last authors have suggested that the irst two peaks correspond to the reduction of CuO species while the third one was ascribed to the reduction of surface lattice oxygen in CeO 2 support. The TPR proile ... See full document

... Effect of UV light on different microorganisms in various efluents using a solar simulator and Black light lamps (BLL): (a) UASB efluent; (b) facultative pond efluent; (c) duckweed pon[r] ... See full document

... The following material is available for free at PDF format at http://quimicanova.sbq.org.br: Figure 1S showing the demulsiier base performance on demulsiication of crude oil [r] ... See full document

... Las iguras que se presentan son: Dependencia de la CMC con la longitud de la cadena alquílica (Figura 1S); Dependencia de la CMC con el volumen molecular del anión para diversos cation[r] ... See full document

... Although sesquiterpenes have been found in several species of the Lauraceae, mainly as components of leaf essential oils, only three representatives of this class of compounds have bee[r] ... See full document

... The enantioselective biotransformation of propranolol (Prop) by the endophytic fungi Phomopsis sp., Glomerella cingulata , Penicillium crustosum , Chaetomium globosum and[r] ... See full document

... Por lo tanto, en el presente trabajo se validó un método por Cromatografía líquida de alta eiciencia (CLAE) para la cuantiica- ción de este fármaco en estos medios biorrelevantes y en s[r] ... See full document

... uma nova identidade da Química, cada vez mais sócio e ambientalmente sustentável, imprimindo as suas características neste campo que se encontra em constante trans- ... See full document

... 1% solution of ferric chloride, 4% solution of sodium nitrite, 10% solution of hydrochloric acid and 0.2% solution of ammonium sulfamate were prepared freshly.. Procedure.[r] ... See full document