COMPLEXING AND GEL EXTRACTION OF GALLIUM WITH PYROCATECHOL VIOLET IN STRATIFYING SYSTEM WATER - SURFACTANT - INORGANIC SALTING-OUT AGENT
The complexation of gallium ions with pyrocatechol violet in the presence of surfactants of different nature: the cationic - catamine AB, anionic - oksifosa B, nonionic - synthanol ALM-10 were studied. Also, a bathochromic shift of the maximum absorbance of gallium complex was observed. The presence of the area of stratification in water - surfactant - inorganic salt systems makes them suitable for the extraction-photometric determination of gallium with pyrocatechol violet.