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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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Spatial and temporal characteristics of nitrate contamination and hydrogeochemical parameters were investigated for springs and surficial and bedrock groundwaters in northeastern part of Hongseong. Two field investigations were conducted at dry and wet seasons in 2011 for 120 sites including measurement of field parameters with chemical analyses of major dissolved constituents. Nitrate concentrations were at background levels in springs while 45% of bedrock groundwater and 49% of surficial groundwater exceeded the drinking water standard of nitrate (10 mg/L as $NO_3$-N). The difference in nitrate concentrations between surficial and bedrock groundwater was statistically insignificant. Cumulative frequency distribution of nitrate concentrations revealed two inflection points of 2 and 16 mg/L as $NO_3$-N. Correlation analysis of hydrogeochemical parameters showed that nitrate had higher correlations with Sr, Mg, Cl, Na, and Ca, in surficial groundwater in both dry and wet season. In contrast, nitrate had much weaker correlations with other hydrogeochemical parameters in bedrock groundwater compared to surficial groundwater and had significant correlations only in wet season. Temporally, nitrate and chloride concentrations decreased and dissolved oxygen (DO) increased from dry season to wet season, which indicates that increased recharge during the wet season affected groundwater quality. Aerobic conditions were predominant for both surficial and bedrock groundwater indicating low natural attenuation potential of nitrate in the aquifers of the study area.
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참고문헌 (47)
참고문헌 신청
Appelo, C.A.J. / 1994 / Geochemistry, Groundwater and Pollution / Rotterdam
Benefield L.D. / 1982 / Process Chemistry for Water and Wastewater Treatment / Prentice Hall Inc :449
Böhlke, J. K. / 2002 / Groundwater recharge and agricultural contamination / Hydrogeol. J. 10:153~179
Cho, J.C. / 2000 / Heavy contamination of a subsurface aquifer and a stream by livestock wastewater in a stock farming area, Wonju, Korea / Environ. Pollut. 109(1):137~146
추창오 / 2009 / 지하수의 수질화학적 특징과 붕소, 브롬, 스트론튬 성인에 대한 고찰 / 지질공학 19(2):235~250
Benefield L.D. / 1982 / Process Chemistry for Water and Wastewater Treatment / Prentice Hall Inc :449
Böhlke, J. K. / 2002 / Groundwater recharge and agricultural contamination / Hydrogeol. J. 10:153~179
Cho, J.C. / 2000 / Heavy contamination of a subsurface aquifer and a stream by livestock wastewater in a stock farming area, Wonju, Korea / Environ. Pollut. 109(1):137~146
추창오 / 2009 / 지하수의 수질화학적 특징과 붕소, 브롬, 스트론튬 성인에 대한 고찰 / 지질공학 19(2):235~250
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