DETERMINATION OF VANADIUM IN TISSUES BY ATOMIC-ABSORPTION SPECTROPHOTOMETRY

A simple and sensitive method for the determination of vanadium in tis sues was established by using atomic absorption spectrophotometry with graphite furnace atomisation. The proposed method includes formation of a chelate-complex by reacting vanadium with pyrrolidine dithiocarba mate (PDCA), extracting the chelate with xylene and measurement of the extract using atomic absorption spectrometry. The recoveries of added vanadium in various rat tissues were 96.7 and 109.3%, within 8.6% of the coefficient variation. The sensitivity of this method is 10 - 50 t imes higher than previous methods, the detection limit is 0.01 mu g/g.