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The Distribution Characteristics and Contamination of Heavy Metals in Soil from Dalcheon Mine  

Suh, Ji-Won (Korea Basic Science Institute, Environmental Materials Research Team)
Yoon, Hye-On (Korea Basic Science Institute, Environmental Materials Research Team)
Jeong, Chan-Ho (Department of Geological Engineering Daejeon University)
Publication Information
Journal of the Mineralogical Society of Korea / v.21, no.1, 2008 , pp. 57-65 More about this Journal
Abstract
The geochemical partitioning of arsenic in contaminated soils from a of wet land and tailing of the abandoned mine is examined. Chemical analysis and sequential extraction method by ultrasound-sonication extraction are applied to investigate the mobility and chemical existence conditions of arsenic as well as heavy metals. The results of this study showed that heavy metals concentration of tailings showed as a following order: Fe > As > Cu > Pb > Cr. The highest metal concentration was recognized in samples less than $63\;{\mu}m$ fraction in their particle sizes. Exchangeable and carbonate fractions in soil samples showed following Cu > As > Pb > Fe > Cr for tailings, and Fe > Pb > Cu > As > Cr for reservoir soils, respectively. Arsenic was bound as exchangeable fraction in tailings and its concentration appeared higher than those of the other metals. Thus, As can be easily dispersed into soil and water environments. The obtained results can be used to design soil remediation plan in the study area and require further detailed study to investigate severe environmental pollution of surface water as well as rivers with respect to heavy metals in terms of speciation analysis of toxic elements such as As and Cr.
Keywords
Heavy metals; ultrasound-sonication extract; KBSI method; soils; Dalcheon mine;
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Times Cited By KSCI : 2  (Citation Analysis)
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