J. Braz. Chem. Soc. vol.17 número5

the basis of these overall results, the combined effect of alumina as solid-phase, Florisil as clean-up layer and dichloromethane as elution solvent makes this extraction

Thermal decomposition pathway proposed for EDTA in the presence of o -PDA in strong acidic solution at 373-383 K... plays a pivotal role in the decomposition process because

No data are available about sources of mercury emissions in the city of Campinas, nor about air quality parameters, however, the higher TGM concentrations observed during the

Spectra from solutions containing 1:1 metal to ligand ratio in the concentration range from 2 to 3.5 mmol L -1 vanadate and 0.5 to 3.0 mmol L -1 tartaric acid.. showed that the

The triplet-triplet (TT) and transient absorptions of non-substituted and substituted thioxanthones has been studied in different solvents in order to ascertain the effect of

From the present experimental results of RRDE, it has been calculated that the value of x becomes higher than 10, at a potential of about -0.2 V for the oxide catalyst which is

In view of the limitations of the existing methods, a study of microwave assisted synthesis of 6-substituted aminopurine analogs in water using a simply modified microwave oven with

In this work, a method for the determination of Hg and Se in biological samples, after microwave-assisted acid digestion with aqua regia of the samples followed by chemical