Diário da Constituinte [gravação de vídeo] : [programa n. 336]

O Congresso pode ser reunir para votar o pacote fiscal. A ideia de convocação extraordinária para votar a reforma tributária do governo é do Constituinte Carlos Chiarelli. Constituintes buscam acordos e negociações para mudança no regimento interno da Constituinte.

Liquid-liquid extraction of Pa-233(V) with Aliquat 336

The extraction of protactinium with Aliquat 336 (methyl-tri-caprylyl ammonium chloride) in toluene, cyclohexane and chloroform from HCl, HNO3, H2SO4, HClO4, HF and mixed HCl-HF media was investigated by radioactive tracer technique. Distribution ratios of protactinium between the aqueous solution and the organic phase were determined as a function of shaking time, concentrations of acid in aqueous solution phase, extractant concentration and type of diluents in the organic phase. Aliquat 336 can almost quantitatively extract protactinium from strong HCl solution. At the same time, small amounts of HF in HCl solutions have a strong effect on Pa distribution.