Lead concentrations in maternal and umbilical cord blood in areas with high and low air pollution.

The lead concentrations in maternal and umbilical cord blood were determined in 50 parturient women at delivery. Twenty-five lived in agricultural areas with low air pollution and 25 lived in urban areas with high air pollution. The mean lead concentrations (mean +/- SD) in maternal and umbilical cord blood and the correlation coefficient of mothers from urban areas with high air pollution were 37.