Proceedings of the Korean Society of Soil and Groundwater Environment Conference (한국지하수토양환경학회:학술대회논문집)
- 2004.04a
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- Pages.97-99
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- 2004
Hydrogeochemical processes and behavior of nitrate in an dlluvial aquifer: A preliminary result from Cheonan area, Korea
- Kim, Kyoung-Ho (Dept. of Earth & Environm. Sci. and Environmental Geosphere Research Lab., Korea Univ.) ;
- Yun, Seong-Taek (Dept. of Earth & Environm. Sci. and Environmental Geosphere Research Lab., Korea Univ.) ;
- Choi, Byoung-Young (Dept. of Earth & Environm. Sci. and Environmental Geosphere Research Lab., Korea Univ.) ;
- Kim, Kang-Joo (Dept. of Environm. Eng., Kunsan Nat′l Univ.)
- Published : 2004.04.01
Abstract
To understand the geochemical processes controlling the distribution of nitrate and other agricultural constituents in an alluvial aquifer, hydrogeological and hydro geochemical studies were carried out in an agricultural area within Cheonan. In this selected field, nitrate concentrations were very wide in range but was locally attenuated significantly down to very low levels (<1.0 mg/L). Abrupt removal of nitrate coincided with the pattern of redox change and thus indicated that geochemical processes occurring during and after recharge events control the behavior and distribution of nitrate and other redox-sensitive chemical species.