2005 Volume 59 Issue 4 Pages 231-235
The ion pair of metal complex with Chrome Azurol S (CAS) and Zephiramine (benzyldimethyltetradecylammonium chloride) was quantitatively collected into the gel of poly (vinyl methyl ether)(PVME). Applying this phenomenon, trace metal ions in aqueous solution could be separated and concentrated into the PVME gel. This gel was separated from the bulk aqueous solution and dissolved into N, N-dimethylformamide (DMF). The metals in the DMF solution were determined by the graphite furnace atomic absorption spectrometry (GFAAS). Using this method, concentration of metals by a factor of100was established, and good separation of trace metal ion from other metal ions was observed. This determination with gel collection was applied to determination of trace metals in sodium chloride and good results were obtained.