Geoscience Reference
In-Depth Information
Fig. 12.21 Effluent concentrations (a) and retention profiles (b) after pulse injections of fullerene
nanoparticle (nC
60
) suspensions in columns packed with either 40-50-mesh or 100-140-mesh
quartz sand with CaCl
2
as the background electrolyte (Wang et al.
2008
). Reprinted with
permission from Li et al. (
2008
). Copyright 2008 American Chemical Society
(KCl) solutions, and consequently favor transport through the inert porous med-
ium. In contrast, SWNTs in the quartz column in the presence of calcium ions are
not released even when humic acid is present in the eluting solution.
