[PDF] Top 20 J. Braz. Chem. Soc. vol.14 número2
Has 10000 "J. Braz. Chem. Soc. vol.14 número2" found on our website. Below are the top 20 most common "J. Braz. Chem. Soc. vol.14 número2".
J. Braz. Chem. Soc. vol.14 número2
... This first meeting was followed by ten others: in 1983 again at PUC-RJ, in 1985 at the Institute of Chemistry of the State University of Campinas (IQ-UNICAMP), in 1987 in São Paulo at th[r] ... See full document
2
J. Braz. Chem. Soc. vol.14 número2
... A cyclic voltammetric study of ranitidine in phosphate buffer, pH 2.0, using HMDE (Figure 4A), shows two irreversible peaks that shift to more negative potentials when the sweep rate is increased. Furthermore, the peak ... See full document
7
J. Braz. Chem. Soc. vol.14 número2
... essential in relation to atomic emission and mass spectrometry. A noteworthy growth in the number of data produced was noted, requiring more and more complex data treatment; this was the driving force towards the de- ... See full document
6
J. Braz. Chem. Soc. vol.14 número2
... A flow system, coupled with flame atomic absorption spectrometry (FIA-FAAS), was developed for tannin determination in pigeon pea samples, exploring the precipitation reaction between ta[r] ... See full document
5
J. Braz. Chem. Soc. vol.14 número2
... Product A has an odd parent ion indicating the replacement of a N by an O or an alkyl group. The MS analysis showed the protonated parent ion (m/z 255) and water elimination (m/z 237). As discussed before, amides are ... See full document
7
J. Braz. Chem. Soc. vol.14 número2
... A copper(II) hexacyanoferrate(III) (CuHCF) modified carbon paste electrode was used for the electroanalytical determination of pyridoxine (vitamin B 6 ) in pharmaceutical preparations, u[r] ... See full document
6
J. Braz. Chem. Soc. vol.14 número2
... In ICP OES with axial view configuration, emphasis is given to effects caused by alkaline and earth-alkaline elements on emission intensity measurements at low and high aerosol loadings (concentric, microconcentric, and ... See full document
6
J. Braz. Chem. Soc. vol.14 número2
... Mallinckrodt (Phillipsburg, USA). For the modified EP method, the stationary phase used in gel-permeation chromatography was Bio Beads SX-8 (200 - 400 mesh) supplied by Biorad (Hercules, USA), while the hydrophobic ... See full document
6
J. Braz. Chem. Soc. vol.14 número2
... To obtain optimum response conditions for the biosensor based on carbon paste modified with a crude extract of Fungi Laccase, the effect of paste composition, initial stirring time, scan[r] ... See full document
7
J. Braz. Chem. Soc. vol.14 número2
... The pyrolysis and atomization temperature curves for slurries of the three certified materials are shown, respectively, in Figure 1 (marine sediment), in Figure 2 (river sediment) and in[r] ... See full document
6
J. Braz. Chem. Soc. vol.14 número2
... In this work, the versatility of capillary electrophoresis is illustrated by representative applications in several areas: clinical/forensic (hemoglobins in hemolysate, ketoacid metaboli[r] ... See full document
10
J. Braz. Chem. Soc. vol.14 número2
... The main purposes of this work were to investigate vanadium(V) oxide as a catalyst in the pyrohydrolysis of coal for fluoride determination using ISE, and the construction of a simple ap[r] ... See full document
5
J. Braz. Chem. Soc. vol.14 número2
... Inductively coupled plasma mass spectrometry with a direct injection nebulizer was used to determine boron isotope ratios from the separated cell walls, nuclei and chloroplasts.. Experim[r] ... See full document
5
J. Braz. Chem. Soc. vol.14 número2
... A new instrumental concept has been developed for atomic absorption spectrometry (AAS), using a high-intensity xenon short-arc lamp as continuum radiation source, a high-resolution doubl[r] ... See full document
10
J. Braz. Chem. Soc. vol.14 número2
... The samples were injected at the anodic reservoir by pressure at 23 kPa (3.4 psi) for 2 s or by gravity at 10 cm for 30 s in a 75 µm (inner diameter), 360 µm (outer diameter) 50 cm long fused-silica capillary ... See full document
4
J. Braz. Chem. Soc. vol.14 número2
... There are a huge number of analytical techniques already used for the extraction of organic compounds from complex solid samples, the most common being Soxhlet extraction, microwave extr[r] ... See full document
15
J. Braz. Chem. Soc. vol.14 número2
... 51 Therefore, most of the quantitative models developed by using NIR spectral information are based on the use of samples whose analyte concentration or property has been determined by a[r] ... See full document
22
J. Braz. Chem. Soc. vol.14 número2
... The focused microwave oven operates at atmospheric pressure, can be used for sample masses up to 10 g, and is adequate for samples with high concentrations of organic materials.. It allo[r] ... See full document
9
J. Braz. Chem. Soc. vol.14 número2
... The drawbacks with first generation biosensors, such as too high applied potentials, put the focus on the use of mediators, which are small redox active molecules (e.g., ferrocene derivates, ferrocyanide, conducting ... See full document
14
J. Braz. Chem. Soc. vol.14 número2
... respectively, in a sediment with 9.5% total carbon content. It is worth mentioning that in an experiment using a sediment with an organic content of 2.5% carbon, the average rate of orga[r] ... See full document
5
temas relacionados