Selective and efficient tripodal receptors for competitive solvent extraction and bulk liquid membrane transport of Hg2+.

Department of Chemistry, Yonsei University, Wonju 220-710, Republic of Korea.
Journal of hazardous materials (Impact Factor: 4.14). 03/2009; 168(2-3):727-31. DOI: 10.1016/j.jhazmat.2009.02.087
Source: PubMed

ABSTRACT A series of tripodal receptors that are different from each other in their end groups were synthesized. The extraction ability and the transport rate of these receptors were evaluated for transition metal ions (Fe(3+), Ni(2+), Cu(2+), Zn(2+) and Hg(2+)). The receptor bearing pyridyl nitrogens extracted Hg(2+) from a buffered aqueous medium containing a mixture of metal ions and transported it into an organic phase with a complete selectivity over the other metal ions. This receptor was effectively used for transporting Hg(2+) from aqueous buffered source phase to aqueous receiving phase through a chloroform membrane.

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