Figure 16 Activity concentrations of 210Pbtot, 226Ra, 228Ra and 228Th (Bq kg-1 dw) in sectioned (0-1, 1-3 and 3-6 cm) sediment cores from stations DRPL23, DRPL24, DRPL26 and DRPL27. Average depths of each section are plotted. Analytical uncertainties are given as ±2σ .
