APPLICATION OF FIBROUS MATERIALS FILLED WITH CHELATING SORBENTS TO METAL PRECONCENTRATION IN AN ONLINE WATER ANALYSIS

The advantages of fibrous materials filled with chelating sorbents for preconcentration purposes are discussed. These materials are suitable for the preparation of minicolumns used for on-line analysis. Minicol umns packed with fibers and chelating sorbents with amine, 8-hydroxyqu inoline and 3(5)-methylpyrazole groups were used for the preconcentrat ion of heavy metals and gold. The conditions of preconcentration and e lution were examined. Satisfactory results of metal determination usin g these minicolumns were demonstrated for the example of copper and go ld determination by the ICP AES method. The coefficient of concentrati on was 22; the limit of detection was 1 mug/l.