Trace elements in children's hair, as related exposure in wastewater spreading field of Marrakesh (Morocco)

Lead and cadmium concentration was determined in the hair of 327 school children living in a wastewater spreading field of Marrakesh (Morocco). The influence of age, sex, food habits and family occupation on the children's hair Pb and Cd concentration was also evaluated. Girls had more metal in their hair than boys (16.5±5.4 μg/g and 12.5±3.5 μg/g, respectively). However, for Cd the boys had more metal (2.9±0.6 and 2.2±0.4, respectively) but the...