PROCESS FOR THE DETERMINATION OF COBALT (2+) IONS CONTENT IN SOLUTIONS USING MODIFIED SILICA

摘要

A process for determination of cobalt (+2) ions content in solutions comprises the use of a solid-phase spectrophotometry according to the data of built calibration diagram of dependence of an absorption strength of cobalt (2+) colored compound obtained in the course of the analysis of a from cobalt (2+) ions concentration with a preliminary concentration of the compound. As a solid carrier the modified natural silica is used – diatomite Celite 545 and time of concentration of cobalt (2+) ions is decreased from 20 to 10 minutes, and also the time of one determination from 25 to 15 minutes.