Abstract
In order to know the background concentration of mercury in biological samples, a quantitative method was established by using the technique of mercury-copper amalgam distillation for thermal neutron activation analysis. One of the advantages for this technique is the use of which was made by bundling 50 pieces of copper wire (0.2×50 mm). The other is that mercury was distilled and recovered by heating the Hg-Cu broom in a Pyrex glass tube (5 mm in φ, 7 mm ex φ, 30 cml, one of the ends being closed). It was possible to recover quantitatively 40 mg of carrier mercury in 10 ml of a sample solution with 3-4 bundles of Cu broom. It was found that this method was available for a sample of low mercury concentration. As a result of application to a human venous blood, the value of 23.2 ppb of mercury was obtained by using 0.5 ml of the blood.
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