MIXED SORBENTS AND THEIR USE IN CONTINUOUS-FLOW ANALYSIS

The new approach to enhancing the selectivity of sorption separation o f metal ions was suggested. The approach is based on using mixed sorbe nts, which may be obtained, e.g. by simultaneous immobilization of com plexing reagents on silica gel and reverse-phase silica gel (C-16, Ph) . The methods are developed for the simultaneous determination of two (Co-Fe, Co-Zn, Al-Mn) or three (Al, Mn and Fe) elements in the concent ration range 2.10(-6)-7.10(-4) M with the performance of 21-36 samples per hour.