Application of Neutron Activation Analysis for Determination of As, Cr, Hg, and Se in Mosses in the Metropolitan Area of the Valley of Toluca, Mexico

Figure 3

Analysis of the elements (Se, Hg, Cr, and As). Mosses samples (autumn): (a) and (b); mosses samples (summer): (c) and (d); topsoil samples: (e) and (f).

(a)

(b)

(c)

(d)

(e)

(f)