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Analysis of Mobile Cadmium from Soils with Functionalized Magnetic Beads  

So Hyungsuk (Korea Institute of Construction Technology)
Nah In-Wook (Korea Institute of Science and Technology)
Hwang Kyung-Yub (Korea Institute of Science and Technology)
Shin Hyun Chul (Korea Institute of Construction Technology)
Kim Beom-Suk (Korea Institute of Construction Technology)
Yoo Yeong-Seok (Korea Institute of Construction Technology)
Publication Information
Journal of Soil and Groundwater Environment / v.10, no.1, 2005 , pp. 13-17 More about this Journal
Abstract
Potential for measuring mobile cadmium concentration in sandy soil using polymer magnetic beads with carboxyl groups was investigated. Experiments for extracting cadmium were performed with contaminated soils, de-ionized water and magnetic beads. In this neutral experimental condition, reacting cadmium with magnetic beads indicate total amount of cadmium that can be moved in soil. The results showed that the mobile fraction of cadmium in soil could be combined with magnetic beads in short time. After binding between cadmium and magnetic beads, the beads were separated from soil suspension by outer magnetic force. The bound cadmium was dissolved from magnetic beads by acid solutions, which were then analyzed by atomic absorption spectroscopy (AAS). This method can determine mobile heavy metals in sandy soil effectively than existing method which use pollutant chemicals to environments such as EDTA.
Keywords
Cadmium; Magnetic beads; Functional group; Sandy soil; Extraction;
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