Unlike this study, WEEE have previously been shown to leach
greater concentrations of lead from TCLP than from WET (Jang
and Townsend, 2003; Lincoln et al., 2007; Yadav and Yadav,
2014). This may be due to a higher affinity of lead for the acetate
ion found in the TCLP extract solution. Zinc and iron concentrations
were greater in WET extracts than the TCLP digestates, however
this did not impact lead leachability as has been shown previously
(Vann et al., 2006b).