Natural Organic Matter and Humic Substances Interactions

A set of imprinted sorbents were synthesized and characterized in terms of elemental and
functional groups composition and molecular weight distribution, FTIR and NMR
sp ectroscopy. Batch equilibrium studies using imprinted and non-imprinted polymer solutions
were conducted
to determine metal-binding capacities.
"Template" polymer
Figure 1: Scheme for template synthesis (“template” arrangement of polymer sorbent)
Imprinted sorbents possess
significant speed of sorption (the balance is set up in several
minutes), sorption capacity
“adjusted” sorbents.
(0.5–3.0 mg-eq M/g) and selectivity of sorption onto the
In a solution with equal concentrations of two different ion species including both copper and
zinc, the polymer captured 23 copper ions for every ion of zinc. The HAA imprinted with zinc
much prefers the zinc ions over the other metal ions, grabbing zinc over nickel, the nearest
competitor, in a ratio of five to one.
4. Conclusions
This research has demonstrated that molecular imprinting of metals using humics-based
sandwiches can be used to selectively induce binding of target metals based on shape
differences of their topologies.
Acknowledgements
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15th IHSS Meeting- Vol. 3
Cross-linking
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This work supported by grant of the International Science and Technology Centre (#ISTC
KR-1316).
References
1. A.D. Pomogailo, et al. Doklady Akademii nauk, 1994, 335, 749–752.
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