ION-CHROMATOGRAPHIC ANALYSIS OF ANIONS BASED ON SOLID-PHASE EXTRACTION

Two kinds of solid phase extraction columns for sample preparation in ion chromatographic analysis of anions were developed. Anion spE-1 Col umn was packed with a polymer sorbent and a cation exchanger. Anion SP E-2 Column was packed with the same sorbent and an anion exchanger. Wi th SPE-1 Column, metal cations and lipophilic mobile were adsorbed on the column while anions remained in the mobile phase (deionized water) . This procedure, coupled with IC, was used for analysis of anions in waste and industrial cooling water, in some solutions from hydrometall urgical process, in plating solutions and in radioactive samples. The analytical recoveries of anions were greater than 95%. With SPE-2 Colu mn and deionized water as mobile phase, the anions were retained on th e column to free them from impurities; then anions were eluted by chan ging the composition of mobile phase. The analysis of anions in biolog ical matrices and food was successfully performed by IC-SPE method on SPE-2 Column.