B 
Figure 4-2. The effect of EDTA on the speciation of metals 
in Aquil. 
Note: Total metal concentrations are given in Table 4-1, with Pb, Cd, Hg, Ni, 
Co, and Cr added as contaminants (lO'^M). A) The percent of each metal that 
is chelated (MeEDTA) versus total EDTA concentration, (M); B) Metal ion 
activity (M) versus total EDTA concentration (M). 
45 
