4. Conclusions
In this work a very simple and fast method for the determination of
Hg2+ and total Hg (Hg2+ plus CH3Hg+) in biological CRM treated with
TMAH or digested in a microwave oven, respectively, by CV AAS is
proposed. The CRM pre-treatment procedure with TMAH provides a
simple, safe, fast, reproducible and effective solubilization method for
biological samples. The determination of total mercury at room
temperature, after CRM acid digestion in microwave oven, assures a
limit of detection similar to that obtained for Hg2+. The procedure for
the proposed fractionation analysis does not require any chromato