Characterization of Urban Particulate Matter by Diffusive Gradients in Thin Film Technique

Figure 1

Mass of Pb found in the resin gel of the DGT probe immersed in the PM suspension (n = 3) for short (a) and long (b) deployment time periods ( = 1.73 mm). The metal flux into the DGT probe (c) is normalized for the metal concentration in the pore water solution. The effect of the diffusive layer thickness (8 h), representing the response of PM to the DGT probe demand, onto Pb uptake is also depicted (d).

(a)

(b)

(c)

(d)