Figure 6

Concentrations of (A) dissolved (<0.45 μm) lead, (B) dissolved thorium, (C) total lead and (D) total Th in snow samples collected from five peat bogs in the study area, the locations of bogs are shown in Fig. S1. The bars in the graph show average Pb or Th concentrations of triplicate samples collected from every site and the error bars represent one standard deviation.