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강원도 오십천 수계에서 발생하는 적갈색침전물의 중금속 오염, 광물조성 및 분광학적 특성

Heavy Metal Contamination, Mineral Composition and Spectral Characteristics of Reddish Brown Precipitation Occurring at Osip Stream Drainage, Gangwon-do

  • 임정화 (충남대학교 우주.지질학과) ;
  • 유재형 (충남대학교 지질환경과학과) ;
  • 배성지 (충남대학교 우주.지질학과) ;
  • 고상모 (한국지질자원연구원 DMR융합연구단) ;
  • 박계순 (한국지질자원연구원 DMR융합연구단)
  • Lim, Jeong Hwa (Department of Astronomy, Space Science and Geology, Chungnam National University) ;
  • Yu, Jaehyung (Department of Geology and Earth Environmental Sciences, Chungnam National University) ;
  • Bae, Sungji (Department of Astronomy, Space Science and Geology, Chungnam National University) ;
  • Koh, Sang-Mo (Convergence Research Center for Development of Mineral Resources, Korea Institute of Geoscience and Mineral Resources) ;
  • Park, Gyesoon (Convergence Research Center for Development of Mineral Resources, Korea Institute of Geoscience and Mineral Resources)
  • 투고 : 2018.03.28
  • 심사 : 2018.05.28
  • 발행 : 2018.06.30

초록

본 연구는 강원도 도계광업소 수계에 발생한 적갈색침전물을 대상으로 침전환경을 파악하고, 중금속함량, 광물조성 및 그에 따른 분광학적 특성을 분석하였다. 적갈색침전물의 pH 범위는 7.59-7.94로 침전환경은 중성에 해당한다. X선형광분석 결과 철이 평균농도보다 높게 검출되었으며, 니켈, 구리 및 아연의 오염도가 높은 것으로 판명된다. X선회절분석 결과 돌로마이트, 방해석, 침철석, 자철석, 고령토, 엽납석, 석영 및 알루미늄 이소프로폭사이드의 광물이 확인되었다. 중금속 오염에 따른 분광학적 특성을 분석한 결과, 중금속함량이 증가함에 따라 가시광선 영역에서는 반사도가 증가하는 추세를, 적외선 영역에서는 반사도가 감소하는 추세를 보인다. 적갈색침전물의 분광특성은 침철석, 자철석, 고령토, 엽납석 및 알루미늄 이소프로폭사이드에 의해 발현되는 것으로 판단된다.

This study analyzed precipitation environment, heavy metal concentration, mineral composition, and spectral characteristics associated with heavy metal concentration and mineral composition for the reddish brown precipitates occurred in the drainage of Dogye mining station. The pH of the reddish brown precipitates ranges from 7.59 to 7.94 resulting neutral. XRF analysis reveals that the precipitates has high Fe concentration, and contaminated with Ni, Cu, and Zn. Dolomite, calcite, goethite, magnetite, kaolinite, pyrophyllite, quartz and aluminum isopropoxide were identified based on XRD analysis. As a result of spectral analysis associated with heavy metal contamination, visible reflectance increases and infrared reflectance decreases with a increase in heavy metal concentration. The spectral characteristics of the reddish brown precipitates is turned out to be manifested by goethite, magnetite, kaolinite, pyrophyllite and aluminum isopropoxide.

키워드

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피인용 문헌

  1. 아연섭취에 따른 적상추의 분광학적 반응: 중금속 오염토양에서의 반응실험 vol.52, pp.2, 2019, https://doi.org/10.9719/eeg.2019.52.2.129