Sorption of cobalt as a nitroso-R-salt complex on silica gels modified with triphenylphosphonium groups followed by determination in the adsorbent phase

The adsorption of cobalt(II) was studied on silica gel with chemically bound triphenylphosphonium groups. Cobalt was quantitatively recovered only in the presence of an additional ligand, nitroso-R-salt, in the solution. A sorption-spectrometric procedure was developed for determining cobalt in waters and alloys.