rapidly and any exposure to Pb, even blood levels as low as 10 μg/dL (0.1 ppm), can cause long-term health
problems within many organ systems and mental and physical impairment (Succuro 2010).
Khodaverdi and Homai (2008) investigated modeling of phytoremediation of soil contaminated with
Cadmium and Lead. Their results showed that the increasing soil contamination with Pb increased
phytoremediation of Pb from soil by Barbarea verna and Spinacia Oleracea L. but increasing soil
contamination with Cd did not change phytoremediation of cadmium from soil by Barbarea verna and
Spinacia Oleracea L.