ELECTROTHERMAL ATOMIZATION ATOMIC-ABSORPTION SPECTROMETRY WITH STABILIZED AQUEOUS STANDARDS FOR THE DETERMINATION OF CADMIUM IN WHOLE-BLOOD

The use of aqueous calibration graphs obtained by addition of a mixture of (NH42HPO4 and Mg(NO3)2 was used in order to determine cadmium in blood samples diluted only with Triton X-100, using atomic absorption spectrometry with electrothermal atomization using a L'vov platform and peak-height evaluation. The addition of this mixture to the aqueous standards results in a thermal behaviour of aqueous cadmium similar to that shown by cadmium in a blood matrix. Several reference materials were analysed for cadmium by the proposed method. The results indicate that the accurate determination of blood cadmium is possible. © 1990.