Figure 1From: Identification of sources of lead exposure in French children by lead isotope analysis: a cross-sectional study Graphical plot of 207 Pb/ 206 Pb Vs. 206 Pb/ 204 Pb for a child (example). Error bars represent error measurement (2SD). The soil sample was incriminated as the source of exposure, while the two dust samples from child's house rooms were discarded.Back to article page