Abstract
A spectrophotometric method of analysis for technetium(VII) was developed to supplement the radiochemical and polarographic methods that are now used in laboratories of radiochemical processing plants. Technetium is determined as the pertechnetate ion in the concentration range from 2 to 40 mu g per ml in the final solution by measuring at 655 m mu the intensity of the color that is formed at pH 8.0 with thioglycolic acid. Beer's law is obeyed over this range. The molar absorptivity is estimated to be of the order of 1800, Few anions interfere. The time required for the determination is short, and the technique is simple.
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