Hydrochemistry of urban groundwater in Seoul, South Korea: effects of land-use and pollutant recharge
- Authors
- Choi, BY; Yun, ST; Yu, SY; Lee, PK; Park, SS; Chae, GT; Mayer, B
- Issue Date
- 10월-2005
- Publisher
- SPRINGER
- Keywords
- urban groundwater; hydrochemistry; stable isotopes; land use and contamination; Seoul; Korea
- Citation
- ENVIRONMENTAL GEOLOGY, v.48, no.8, pp.979 - 990
- Indexed
- SCIE
SCOPUS
- Journal Title
- ENVIRONMENTAL GEOLOGY
- Volume
- 48
- Number
- 8
- Start Page
- 979
- End Page
- 990
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/123214
- DOI
- 10.1007/s00254-004-1205-y
- ISSN
- 0943-0105
- Abstract
- The ionic and isotopic compositions (delta D, delta O-18, and H-3) of urban groundwaters have been monitored in Seoul to examine the water quality in relation to land-use. High tritium contents (6.1 - 12.0 TU) and the absence of spatial/seasonal change of O - H isotope data indicate that groundwaters are well mixed within aquifers with recently recharged waters of high contamination susceptibility. Statistical analyses show a spatial variation of major ions in relation to land-use type. The major ion concentrations tend to increase with anthropogenic contamination, due to the local pollutants recharge. The TDS concentration appears to be a useful contamination indicator, as it generally increases by the order of forested green zone ( average 151 mg/l), agricultural area, residential area, traffic area, and industrialized area ( average 585 mg/ l). With the increased anthropogenic contamination, the groundwater chemistry changes from a Ca - HCO3 type toward a Ca - Cl(+ NO3) type. The source and behavior of major ions are discussed and the hydrochemical backgrounds are proposed as the basis of a groundwater management plan.
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