To simplify the analytical procedure of mercury in urines, different a
nalytical results obtained by cold vapor AAS are presented. Ideal cond
itions for a total recuperation of Hg in urine are retained. The simpl
ified protocol allows a great economy in time and in rha costs of the
regents. The detection limits is 10 ng/ml. The linearity range is 10 n
g --> 1000 ng/ml of Hg used with 200 mu l volume of the samples.