DETERMINATION OF THALLIUM AFTER PRECONCENTRATION ON AMBERLITE IR-120 BY ICP-MS

Abstract

A preconcentration technique, which includes Amberlite IR-120 cation exchange resin, was applied for the determination of thallium traces in river water. Analysis of synthetic thallium solutions consistently yielded >95% recovery with negligible cross contamination. The certified reference material was used to test the accuracy of the method described. Water samples collected from selected stations of Lower Sakarya River were analyzed for dissolved thallium concentrations were found to be 120 +/- 8 ng L-1 for Sakarya koprusu and 110 +/- 6 ng L-1 for Adliye koprusu. The preconcentration factor for thallium ion was found as 100. As a result, simple, accurate, highly sensitive, and efficient solid phase extraction method was developed for preconcentration trace thallium species prior to determination by ICP-MS. Thus, the experimental results showed that Amberlite IR-120 cation exchange resin can be used for thallium determination.