Electrothermal atomic absorption spectrometric determination of ultratrace amounts of tellurium using a palladium-coated L'vov platform after separation and concentration by hydride generation and liquid anion exchange

Abstract

An ultrasensitive method is described for the measurement of nanogram amounts of tellurium in the presence of interferents. Tellurium is separated from the matrix by hydride generation, concentrated on a liquid anion exchanger (liquid Amberlite LA-2) and atomized from a platform, previously treated with palladium. Analytical performances are reported and the possibility of application of the method to the analysis of complex samples (sea water, sediments) is proved.