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Spatial Distribution of Metal (loid) Contamination in Agricultural Soil as Affected by the Abandoned Mines: A Case Study of Buyeo County, South Korea

폐금속 광산의 영향을 받는 농경지 토양 내 금속성분 오염의 공간적 분포특성: 충청남도 부여군의 사례연구

  • Yun, Sung-Wook (Department of Agricultural Engineering, National Institute of Agricultural Sciences, RDA) ;
  • Kim, Dong-Hyeon (Department of Agricultural Engineering, National Institute of Agricultural Sciences, RDA) ;
  • Kang, Dong-Hyeon (Department of Agricultural Engineering, National Institute of Agricultural Sciences, RDA) ;
  • Lee, Si-Young (Department of Agricultural Engineering, National Institute of Agricultural Sciences, RDA) ;
  • Son, Jinkwan (Department of Agricultural Engineering, National Institute of Agricultural Sciences, RDA) ;
  • Kim, Hae-Do (Rural Research Institute, Korea Rural Community Corporation) ;
  • Yoon, Yong-Chel (Department of Agricultural Engineering (Insti. of Agric, and Life Sci) Gyeongsang National University) ;
  • Yu, Chan (Department of Agricultural Engineering (Insti. of Agric, and Life Sci) Gyeongsang National University)
  • Received : 2017.09.13
  • Accepted : 2017.10.10
  • Published : 2017.11.30

Abstract

In this study, the concentrations of As, Cd, Cu, Pb and Zn in agricultural soils across a region of South Korea (Buyeo County) were investigated. Their pollution sources were assessed using multivariate statistical analysis, and Geographic Information System (GIS) technology was used to determine the distribution of these elements. Surface soil samples were collected from 114 locations across the agricultural fields in the study site. Cu and Zn were derived from natural sources (i.e., parent rocks of the soil), whereas As, Cd, and Pb were found to be originated from abandoned mines. The results of this study clearly show that the transport of anthropogenic As, Cd, and Pb is governed mostly by the specific environment of the paddy soil. Our approach was effective in clearly identifying the sources of metals and analyzing their contamination characteristics. We believe this study will provide useful information to future studies on soil pollution by anthropogenic sources.

Keywords

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