[Microelements in the placenta, in maternal blood and in umbilical cord blood].Zentralbl Gynakol. 1984; 106(17):1204-14.ZG
The content of copper, zinc, plumbum and cadmium was determined in maternal blood, umbilical blood and placental tissue using atomic absorption method. In umbilical blood the concentration of copper and zinc was significantly lower, independent from sex and birth weight of the newborns and from age and residence of the mothers. Cadmium and plumbum did not show such differences. Placenta is permeable to cadmium.