Geoscience Reference
In-Depth Information
Fig. 16.19 GC-ECD chromatograms showing appearance of polybrominated diphenyl ether
(PBDE) congeners, after sunlight irradiation of BDE-209 (retention time = 88.7 min) adsorbed
on montmorillonite, at different times. Reprinted with permission from Ahn et al. (
2006
).
Copyright 2006 American Chemical Society
16.1.4 Ligand Effects
Speciation induces transformation of contaminants, affecting mainly their retention
and redistribution in the subsurface. As an illustration, we consider three studies
that deal with speciation of trace metals and organic contaminants in the subsurface.
