Journal of the Korean GEO-environmental Society (한국지반환경공학회 논문집)

Korean Geo-Environmental Society (한국지반환경공학회)
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Heavy Metal Concentrations in Soils and Crops in the Poongwon Mine Area

풍원광산 지역의 토양 및 농작물 중금속 오염

  • 김좌관 (부산가톨릭대학교 환경공학과)
  • Received : 2009.09.21
  • Accepted : 2009.12.28
  • Published : 2010.02.01
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Abstract

Abandoned mines release acid mine drainage and cause the contamination of soil and crops around the mine area. The objective of current study is to evaluate effect of mine on the soil and crop contamination. Soils, water, and crops were collected and analyzed, and the heavy metal data were classified into types of the soil, types of crops, and distance from the minehead. Surface soils of the mine area were highly contaminated with heavy metals, especially with zinc and lead. Tailings and cultivated paddy soils were also highly contaminated. Heavy metal concentrations upon distance from minehead decrease steadily as the distance from the minehead increase. The correlation between heavy metals was extracted from soils and the content in the rice samples showed a positive relation for arsenic and cadmium but not a meaningful relation for other metals.

폐광산 주변의 광미장, 폐석더미로 인해 주변 지역의 토양 및 농작물들은 중금속으로 오염 될 수 있다. 본 연구는 주변토양 용도별, 농작물 재배품목별, 광산과의 이격거리별로 분류하여 광산 주변 중금속 오염실태조사를 수행하였다. 갱구인근 지역에서 Zn와 Pb이 토양오염기준치를 초과하였으며 다른 지역에 비해 광미장 지역과 논 경작지 토양의 중금속농도가 비교적 높은 것으로 나타났다. 광산과의 이격거리에 따른 중금속 농도는 갱구에서 거리가 멀어질수록 점차 감소하였다. 토양과 쌀 시료의 중금속 상관관계는 As와 Cd이 상관관계성이 있는 것으로 나타났으나 다른 중금속들은 관계성이 없는 것으로 조사되었다.

Keywords

Acknowledgement

Supported by : 부산가톨릭대학교

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