Dispersion and Enrichment of Potentially Toxic Elements of Farmland Soils from the Boeunjeil Mine Area, Korea

보은제일광산일대의 밭토양에 대한 독성원소들의 분산과 부화

  • Yoo, Bong-Chul (Department of geology and environmental sciences, Chungnam National University) ;
  • Kim, Ki-Jung (Department of geology and environmental sciences, Chungnam National University) ;
  • Lee, Chan-Hee (Department of cultural heritage conservation sciences, Kongju National University) ;
  • Lee, Hyun-Koo (Department of geology and environmental sciences, Chungnam National University)
  • 유봉철 (충남대학교 지구환경과학과) ;
  • 김기중 (충남대학교 지구환경과학과) ;
  • 이찬희 (공주대학교 문화재보존과학과) ;
  • 이현구 (충남대학교 지구환경과학과)
  • Published : 2007.02.28

Abstract

The study is for contaminations of major, rare earth and trace elements of the farmland soils from the Boeunjeil mine area. The results are compared with the soils of Chungjoo, Deokpyeong, Boeun and Chubu areas. Fe and S contents of the contaminated area are high relative to those from the uncontaminated areas, Chungjoo and Boeun areas. Trace elements of the contaminated area are high relative to those from uncontaminated area, Chunajoo, Deokpyeong, Boeun and Chubu areas. The trace elements ares divided into Cd, Ni, Sr, U, V, Zn and As, Co, Cu, Mo, Pb, Sb, based on these dispersion and correlation. Two groups show the positive correlation. Enrichment factor of potentially toxic elements from contaminated area is >5 value, but <4 value in the uncontaminated area. In the geoaccumulation index of the minor elements, the contaminated area has >1 value and the uncontaminated area has <1 value except Mn. Enrichment index of potentially toxic elements(As, Cd, Co, Cu, Ni, U, Zn) ranges from 0.3 to 87.0 in the contaminated area and from 0.4 to 3.9 in the uncontaminated area. Overall results show that the high contents of farmland soils for the elements(Fe, S, As, Cd, Co, Cu, Ni, U, Zn) indicate the contamination by coal-related activities.

이 연구에서는 보은제일광산 주변 밭토양의 오염정도를 주원소, 희토류원소 빛 미량원소를 이용하여 접근해보았다. 이들 연구결과는 충주, 덕평, 보은 및 추부지역의 것들과 비교되었다. 주성분 원소 중 Fe와 S는 비오염예상지역, 충주 및 보은지역 밭토양의 원소보다 높았다. 오염예상지역에서의 미량윈소는 비오염예상지역, 충주, 덕평, 보은 및 추부지역의 함량보다 높았다. 이들 원소들은 상관성과 분산을 기초로 U, Cd, Ni, Sr, V, Zn 등의 원소들과 As, Co, Cu, Mo, Pb, Sb 등의 원소들로 구분되며 두 그룹의 원소들은 원소간에 양의 상관성을 갖는다. 잠재적 독성윈소들의 부화 계수는 오염예상지역에서 5 이상의 값을 갖으며 비오염예상지역에서는 4 미만의 값을 갖는다. 오염예상지역에서 As, Cd, Co, Cu, Mn, Ni, U 및 Zn 원소의 지누적지수는 1 이상의 값을 갖으며, 비오염예상지역에서는 Mn원소를 제외한 모든 미량원소가 1 미만의 값을 갖는다. 잠재적 독성원소에 대한 부화지수에서 오염예상지역($0.3{\sim}87.0$)과 비오염예상지역($0.4{\sim}3.9$)은 차이를 보였다. 전체적인 오염예상지역 밭토양내 원소들(Fe, S, As, Cd, Co, Cu, Ni, U, Zn)의 높은 함량은 광산활동에 의한 오염을 지시한다.

Keywords

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