J. Braz. Chem. Soc. vol.25 número11

The pH of sample or standard solution containing 1-36 ng of cadmium was adjusted to about 8.0 with diluted sodium hydroxide or hydrochloric acid solution and was passed through

The parameters analysed indicated a low oxidation resistance for B100 biodiesel, however, the addition of antioxidants increased stability in all treatments, and those

The infusions were split; 20 mL portions were analysed by FAAS for total concentrations of Ca, Fe, Mg and Mn, another 40 mL aliquots were subjected to in vitro

A higher dose of UVA per unit of volume in the solar experiments was necessary to reach the same results obtained using artificial radiation due the higher absorption of photons

The kinetic model that best fit was broadcast Noyes- Whitney and kinetic constants for transfer of the analytes to the organic phase were inversely proportional to the saturation

a catalyst of high surface area, which may have favored catalytic activity, while in this study we used a catalyst with a low surface area, suggesting that the catalytic activity

In the present work, metformin HCl and glimepiride, the two well-known anti- diabetic drugs, have been evaluated directly by transmission FTIR in dosage form by preparing

type, concentration and volume of eluent, the amount of adsorbent, the sorption and desorption time, the volume of sample solution and the effect of different coexisting ions