[PDF] Top 20 J. Braz. Chem. Soc. vol.25 número2
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J. Braz. Chem. Soc. vol.25 número2
... Modern analytical measurements are commonly presented in the form of vectors (e.g., spectra) or higher order data structures such as matrices, and these are often subjected to multivari[r] ... See full document
14
J. Braz. Chem. Soc. vol.25 número2
... Based on the reaction of Zn(II), thiocyanate and 2-[2-(5-dimethylamino-thiophen-2-yl)-vinyl]- 1,3,3-trimethyl-3 H -indolium bromide (DTVTI), a donor-active solvent-assisted liquid-phase [r] ... See full document
7
J. Braz. Chem. Soc. vol.25 número2
... The precision (repeatability) was tested using synthetic spiked seawater of salinity 30 and 10 for the HPLC-DAD and LC-ESI-MS/MS methods, respectively (Table 3). Different salinities were used due to matrix effect ... See full document
9
J. Braz. Chem. Soc. vol.25 número2
... resulting cation vacancy condensation separates the films from the substrate and prevents further growth of the films. At the same time, the dissolution of passive films still takes place on the film/solution interface. ... See full document
8
J. Braz. Chem. Soc. vol.25 número2
... Experiments to investigate the effects of the initial B[a]P concentration, contact time, and temperature on the adsorption kinetics and isotherms were conducted individually using amb[r] ... See full document
11
J. Braz. Chem. Soc. vol.25 número2
... The microorganisms used in the study were the three Gram-negative bacteria Escherichia coli, Pseudomonas aeruginosa and Acinetobacter baumannii, clinically isolated strains. Antibacterial assays were carried out using ... See full document
7
J. Braz. Chem. Soc. vol.25 número2
... N -halo reagents are widely used in organic synthesis and as a continuation of our interest in the application of N -halo compounds in organic synthesis, dibromo dimethylhydantoin (DB[r] ... See full document
4
J. Braz. Chem. Soc. vol.25 número2
... The internal standard purity is not a source of uncertainty in this analysis, as, independently from its value, this material is added to the points of the calibration curve and to th[r] ... See full document
10
J. Braz. Chem. Soc. vol.25 número2
... Stratmann, R. E.; Yazyev, O.; Austin, A. J.; Cammi, R.; Pomelli, C.; Ochterski, J. W.; Ayala, P. Y.; Morokuma, K.; Voth, G. A.; Salvador, P.; Dannenberg, J. J.; Zakrzewski, V. G.; Dapprich, ... See full document
11
J. Braz. Chem. Soc. vol.25 número2
... The total time required to prepare samples of honeys using the procedure is only about 30 minutes and includes the preparation of resin beds and 10% (m/v) sample solutions of honeys, [r] ... See full document
9
J. Braz. Chem. Soc. vol.25 número2
... The sewage samples were spiked with sulfamethoxazole, trimethoprim, diclofenac, bezafibrate, estradiol, ethinyl estradiol, bisphenol A and miconazole, each at final concentrations of [r] ... See full document
15
J. Braz. Chem. Soc. vol.25 número2
... This paper is about an improved temperature-controlled ionic liquid dispersive liquid-phase microextraction method for pre-concentration of cadmium ions prior to determination by flame [r] ... See full document
7
J. Braz. Chem. Soc. vol.25 número2
... On the other hand, the cathodic process increases in the presence of LA during negative potential sweep in aqueous medium, suggesting that an electroreduction reaction of LA on the el[r] ... See full document
8
J. Braz. Chem. Soc. vol.25 número2
... Looking at point 1 (samples S1A and S1B) it can be seen (Table 3) that the levels of dissolved organic matter were higher (sample S1A) in the beginning of the rainy season compared to[r] ... See full document
11
J. Braz. Chem. Soc. vol.25 número2
... In this paper, DLLME-SFOD technique combined with spectrophotometry is used for the separation/ preconcentration and determination of selenium in garlic and selenium plus tablet and it[r] ... See full document
9
J. Braz. Chem. Soc. vol.25 número2
... Using quantitative data for free steroids in various oils, a chemometric evaluation was made to correlate the types and levels of steroids present in them.Thus, a model based on princ[r] ... See full document
8
J. Braz. Chem. Soc. vol.25 número2
... The average of the three individual batches was used with respect to the proximal composition, direct and indirect energy methods, sums, ratios and indices of fatty acids, mineral com[r] ... See full document
10
J. Braz. Chem. Soc. vol.25 número2
... According to the results obtained (Table 3) esters and thioesters were prepared from the reaction of aromatic and aliphatic carboxylic acids with primary and secondary aliphatic and b[r] ... See full document
11
J. Braz. Chem. Soc. vol.25 número2
... The fractions obtained after the sequential extraction procedure (solutions of NaOH, HCl, Tris-HCl, Tris-HCl buffer containing SDS and hot water) were analyzed using gel electrophores[r] ... See full document
7
J. Braz. Chem. Soc. vol.25 número2
... This paper describes development, optimisation and validation of a method for the simultaneous analysis of 7 multi-class pharmaceuticals (caffeine (CAF), Prazosin (PRZ), enalapril male[r] ... See full document
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