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2019 Vol.24, Issue 6 Preview Page
Geochemical Characteristics and Assesment of Nitrate Nitrogen in Groundwater in Yanggu-Gun, Gangwon-Do in Korea
Won Gyu Choi1*
1Department of New Energy and Mining Engineering, SangJi University
*Corresponding Author
31 December 2019. pp. 26-32
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Abstract

An analysis of groundwater quality is significant for monitoring and managing water contamination and groundwater system. For the purpose of those, the geochemical characteristics of groundwater were studied over the concern for water quality, water type and origin of nitrate nitrogen. Total colony counts were detected in 11 out of 20 samples, and the average value was 31.73 CFU/ml. Range and average of NO3-N concentrations were 0.9~24.0 mg/L and 8.3 mg/L. All groundwater types were found to be Ca2+-HCO3−. The range and average of NO3-N were 0.2~17.4 mg/L and 8.7 mg/L, and those of δ15N were 1.7~8.9‰, and 5.0‰. Careful consideration is required for evaluating the origin of nitrogen when NO3-N concentration is low. In general, noticeable difference between rockbed and alluvial water was not found. The ranges of nitrate origins by chemical fertilizer, livestock manure and domestic sewage, and natural soil were 29.6~76.4%, 14.2~58.9% and 2.6~7.0%, and the average values of those were 57.4%, 37.4%, and 5.3%, respectively. Origin of nitrate was affected by more chemical fertilizer than the other parameters. Rockbed water was more affected by chemical fertilizer than alluvial water.

Keywords
Groundwater quality
Water type
Nitrate nitrogen
Nitrogen Isotope
Origin of nitrogen
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Information
  • Publisher :The Korean Society of Soil and Groundwater Environment
  • Publisher(Ko) :한국지하수토양환경학회
  • Journal Title :Journal of Soil and Groundwater Environment
  • Journal Title(Ko) :지하수토양환경
  • Volume : 24
  • No :6
  • Pages :26-32
  • Received Date : 2019-12-09
  • Revised Date : 2019-12-09
  • Accepted Date : 2019-12-20
  • DOI :https://doi.org/10.7857/JSGE.2019.24.6.026
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