• Assessment of the Feasibility of the Hydrochloric Acid Extraction Method and the Chemical Properties of Agricultural Soils in reclaimed mines
  • Ju-In Ko1·Mi-Sun Park1·Gwan-In Park1·Seung-Han Baek1·Il-Ha Koh2*

  • 1Technology Research & Development Institute, Korea Mine Rehabilitation and Mineral Resources Corporation, Won-ju, 26464, Korea
    2National Environment Lab. (NeLab), Seoul, 02841, Korea

  • 폐광산 토양개량·복원사업 완료 농경지 안정화 효율 및 화학성 평가
  • 고주인1·박미선1·박관인1·백승한1·고일하2*

  • 1한국광해광업공단 기술연구원
    2환경기술정책연구원 (NeLab)

  • This article is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.


In Korea, the common remedial process for reclamation of agricultural soils nearby abandoned mines involves chemical soil stabilization followed by covering with clean soil. This study investigated the chemical properties of cover soils and the validity of HCl extraction method in assessing the degree of As and heavy metal stabilization in stabilized soils collected from 14 plots where mine reclamation had been completed. The results revealed there were no major differences in contaminants extraction rate between the stabilized soils and contaminated soils, suggesting HCl extraction procedure is a less feasible method to determine the efficiency of the stabilization. Soil quality indicators including OM, SiO2, P2O5, etc. of the land-covering soils were generally lower than those of stabilized soils that used to be the cultivation layer before the stabilization. Nonetheless, the value of those indicators didn’t meet the regulatry limits of agricultural soil. Therefore, future strategy for mine reclamation should concentrate not only on contaminant concentration but also on soil quality parameters for agricultural use of the reclaimed soil.

Keywords: Stabilization, Arsenic, Heavy metal, HCl extraction method, Soil quality

This Article

  • 2024; 29(1): 10-17

    Published on Feb 29, 2024

  • 10.7857/JSGE.2024.29.1.010
  • Received on Dec 22, 2023
  • Revised on Jan 22, 2024
  • Accepted on Feb 19, 2024

Correspondence to

  • Il-Ha Koh
  • National Environment Lab. (NeLab), Seoul, 02841, Korea

  • E-mail: ilha@nelab.re.kr