Econ. Environ. Geol. 2001; 34(6): 539-553

Published online December 31, 2001

© THE KOREAN SOCIETY OF ECONOMIC AND ENVIRONMENTAL GEOLOGY

Geochemical Characteristics and Origin of Dissolved Ions in the Han River Water

Kyu-Han Kim* and Eun-Sook Shim

Department of Science Education, Ewha Womans University, Seoul 120-750 Korea

Correspondence to :

Kyu-Han Kim

kyuhan@ewha.ac.kr

Received: October 25, 2001; Accepted: December 19, 2001

Abstract

Geochemical data of the Han river water, including four tributary water samples in the main Han river are presented in this paper. The concentration of dissolved ions in the North Han river water decreases in order of Ca>Na>K>Mg and HCO3>NO3>SO4>Cl, which is mainly affected by the chemical weathering of granite and gneiss in the drainage basin. Meanwhile, the South Han river water shows a decreasing order of Ca>Mg>Na>K and HCO3>SO4>NO3>Cl, which is controlled by the bed rock geology of carbornate rocks and the inflow of acid mine drainage from the metal and coal mines in the Taebaegsan and Hwanggangri areas. The main Han river waters are
characterized by unusually high concentration of Na, Cl and SO4 (Ca>Na>K>Mg and HCO3>SO4>Cl>NO3), indicating a significant anthropogenic pollution by human activities in the metropolitan Seoul city. The geochemical data of the Han river waters from 1981 through 1996 to 1999 records a significant increase in SO4 and NO3, which responsible for the increasing acid mine drainage and municipal anthropogenic pollution.

Keywords Han river water, geochemical data, dissolved ions, anthropogenic pollution, acid mine drainage

Article

Econ. Environ. Geol. 2001; 34(6): 539-553

Published online December 31, 2001

Copyright © THE KOREAN SOCIETY OF ECONOMIC AND ENVIRONMENTAL GEOLOGY.

Geochemical Characteristics and Origin of Dissolved Ions in the Han River Water

Kyu-Han Kim* and Eun-Sook Shim

Department of Science Education, Ewha Womans University, Seoul 120-750 Korea

Correspondence to:

Kyu-Han Kim

kyuhan@ewha.ac.kr

Received: October 25, 2001; Accepted: December 19, 2001

Abstract

Geochemical data of the Han river water, including four tributary water samples in the main Han river are presented in this paper. The concentration of dissolved ions in the North Han river water decreases in order of Ca>Na>K>Mg and HCO3>NO3>SO4>Cl, which is mainly affected by the chemical weathering of granite and gneiss in the drainage basin. Meanwhile, the South Han river water shows a decreasing order of Ca>Mg>Na>K and HCO3>SO4>NO3>Cl, which is controlled by the bed rock geology of carbornate rocks and the inflow of acid mine drainage from the metal and coal mines in the Taebaegsan and Hwanggangri areas. The main Han river waters are
characterized by unusually high concentration of Na, Cl and SO4 (Ca>Na>K>Mg and HCO3>SO4>Cl>NO3), indicating a significant anthropogenic pollution by human activities in the metropolitan Seoul city. The geochemical data of the Han river waters from 1981 through 1996 to 1999 records a significant increase in SO4 and NO3, which responsible for the increasing acid mine drainage and municipal anthropogenic pollution.

Keywords Han river water, geochemical data, dissolved ions, anthropogenic pollution, acid mine drainage

    KSEEG
    Jun 30, 2024 Vol.57 No.3, pp. 281~352

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