Journal of the Korean Association of Geographic Information Studies (한국지리정보학회지)

The Korean Association of Geographic Information Studies (한국지리정보학회)
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A Study on the Soil Contamination(Maps) Using the Handheld XRF and GIS in Abandoned Mining Areas

휴대용 XRF와 GIS를 이용한 폐광산 지역의 토양오염에 관한 연구

  • Lee, Hyeon-Gyu (Department of Energy Resources Engineering, Pukyong National University) ;
  • Choi, Yo-Soon (Department of Energy Resources Engineering, Pukyong National University)
  • 이현규 (부경대학교 에너지자원공학과) ;
  • 최요순 (부경대학교 에너지자원공학과)
  • Received : 2014.05.30
  • Accepted : 2014.09.25
  • Published : 2014.09.30
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Abstract

In this study, soil contamination maps related to Cu and Pb were created at the Busan abandoned mine in Korea using a handheld X-Ray Fluorescence(XRF) and Geographic Information Systems(GIS). Hydrological analysis was performed using the Digital Elevation Model(DEM) of the study area to identify the flow directions of surface runoff where pollutants can be dispersed from the soil contamination sources. 24 locations for measuring the soil contamination related to Cu and Pb were selected by considering the result of hydrological analysis. The results measured at the 24 locations using the handheld XRF showed that the highest value of Cu contamination is 8,255ppm and that of Pb is 2,146ppm. The field investigation data were entered into ArcGIS software, and then soil contamination maps regarding Cu and Pb with a 5m grid-spacing were created after performing spatial interpolations using the ordinary kriging method. As a result, we could know that high concentrations of Cu and Pb are presented at the waste and tailings dumps around the abandoned mine openings. This study also showed that the handheld XRF and GIS can be utilized to create soil contamination maps related to Cu and Pb in the field.

본 연구에서는 휴대용 X-선 형광 분석기(X-Ray Fluorescence, XRF)와 지리정보시스템(Geographic Information Systems, GIS)을 이용하여 부산 폐광산 지역의 구리와 납에 관한 토양오염지도를 작성하였다. 연구지역의 수치표고모델(Digital Elevation Model, DEM)을 이용한 수문 분석을 통해 오염원으로부터 오염 물질이 확산될 수 있는 빗물의 흐름방향을 분석하였으며, 이를 고려하여 토양오염도 측정 지점을 24곳 선정하였다. 휴대용 X-선 형광 분석기를 이용하여 24곳 토양에서 구리와 납의 농도를 측정한 결과, 구리는 최대 8,255ppm, 납은 최대 2,146ppm가 검출되었다. 휴대용 X-선 형광 분석기로 측정한 구리와 납의 농도 자료를 ArcGIS 소프트웨어에 입력하였으며, 정규크리깅(ordinary kriging) 기법을 이용하여 공간보간(spatial interpolation)을 수행한 후 구리와 납에 관한 5m 해상도의 토양오염지도를 작성하였다. 그 결과 부산 폐광산 지역에서는 갱구들 주변에 적치되어 있는 폐석 및 광미를 중심으로 고농도의 구리와 납이 토양 내에 존재하는 것을 작성된 토양오염지도로부터 확인할 수 있었다. 본 연구를 통해 휴대용 X-선 형광 분석기와 GIS를 이용한 구리와 납의 토양오염지도 작성방법이 현장에서 효과적으로 사용될 수 있음을 알 수 있었다.

Keywords

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