D. F. Martin, Nicholas P Kondis, Robert L. Alldredge
Jan 2, 2009
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0
Influential Citations
15
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Journal
Journal of Environmental Science and Health, Part A
Abstract
The present study describes the effectiveness of removal of perchlorate ion by Octolig® a commercially available immobilized ligand, IMLIG, and by Cuprilig, the cupric ion derivative of this material. Octolig® consists of polyethylenediamine moieties covalently bound to a high-surface area silica gel (CAS Registry number = 404899–06-5). Perchlorate in drinking water is a nuisance anion that escapes from firms that produce rocket fuel, batteries, and fireworks and becomes a contaminant of groundwater. It may also be a natural component of the environment. Perchlorate ion can interfere with thyroid function and may also cause birth defects. Perchlorate contamination of water supplies is serious because of the difficulty in removing it, especially in the western United States where a combination of drought and water shortages exacerbate the problems of supplying safe drinking water to an increasing population. In this study, aqueous solutions were passed over a chromatography column containing samples of Cuprilig. Test water contained 70 μ g perchlorate/L and effluent was below detection level (< 1 μ g/L. Equally good results were obtained for Octolig® in deionized water and in well water. Analyses were performed by a commercial laboratory. Mechanisms of interaction are proposed.