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http://dx.doi.org/10.4491/KSEE.2011.33.1.032

Correlation of Heavy Metal Concentrations between Total Digestion and Aqua Regia Digestion for Sediments from Yeongsan and Seomjin Watersheds  

Oh, Da-Yeon (Department of Environmental Engineering, Chonnam National University)
Choi, Kyoung-Kyoon (Department of Environmental Engineering, Chonnam National University)
Huh, In-Ae (National Institute of Environmental Research)
Hwang, In-Seong (Department of Civil and Environmental Engineering, Pusan National University)
Kim, Young-Hoon (Department of Environmental Engineering, Andong National University)
Hur, Jin (Department of Environmental and Energy, Sejong University)
Shin, Hyun-Sang (Department of Environmental Engineering, Seoul National University of Science and Technology)
Oh, Jeong-Eun (Department of Civil and Environmental Engineering, Pusan National University)
Shin, Won-Sik (Department of Environmental Engineering, Kyungpook National University)
Park, Jeong-Hun (Department of Environmental Engineering, Chonnam National University)
Publication Information
Journal of Korean Society of Environmental Engineers / v.33, no.1, 2011 , pp. 32-38 More about this Journal
Abstract
In this study, the correlations of concentrations in sediment heavy metals between two pretreatment methods, total digestion and aqua regia digestion, have been investigated. Total 43 samples had been collected from streams and lakes in Yeongsan and Seomjin watersheds. They were decomposed in two pretreatment methods and five metal components (Cd, Cr, Ni, Pb, Zn) were analyzed. Overall average concentrations of heavy metals were Zn>Cr>Pb>Ni>Cd in the order. The concentrations of aqua regia digestion were 35.0% (Cd), 53.8% (Cr), 66.2% (Ni), 64.4% (Pb) and 76.4% (Zn) of the concentrations of total digestion and heavy metal concentrations of total digestion were higher. Heavy metal concentrations in sediments from lakes were higher than those from streams. The correlation equations between the concentrations of total digestion and aqua regia digestion were obtained. The concentrations of Zn and Ni, which showed strong linear correlations, increased in aqua regia digestion as the concentration in total digestion increased. The linear correlation coefficients between two digestion methods for most analyzed metals were above the average correlation. However, these results can be applied with limitations due to heterogeneity of sediments.
Keywords
Yeongsan River; Sediment; Heavy Metals; Total Digestion; Aqua Regia Digestion; Correlation;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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