Econ. Environ. Geol. 2012; 45(1): 23-30

Published online February 28, 2012

© THE KOREAN SOCIETY OF ECONOMIC AND ENVIRONMENTAL GEOLOGY

Hydro-geochemical Nature and Nitrates Contamination Charecters of Groundwater in the Youngdong, Chungbuk Province

In-Gyerong Lee and Sang-Hoon Choi*

Department of Earth and Environmental Sciences, Chungbuk National University, Cheongju, 361-763, Korea

Correspondence to :

Sang-Hoon Choi

cshoon@chungbuk.ac.kr

Received: December 1, 2011; Accepted: February 12, 2012

Abstract

Major ions and nitrogen isotopic analyses were performed to determine the geochemical characters and to identify the source of nitrate of the shallow groundwater around agricultural field in the Youngdong area. The pH value of groundwater ranges from 60. to 8.2 (pH 7.2, mean). The average of EC, Eh and DO is 369 μS/cm (70~729 μS/cm), 165.6 mV (29~383.2 mV), 4.3 mg/L (1.8~8.0 mg/L) respectively. The ion concentraion of groundwater was in the order of Ca2+>Na2+>Mg2+>K2+ and HCO3>NO3>SO42>Cl>F-. Most of groundwater is Ca-HCO3 type. The groundwater was affected by water-rock interaction in the shallow depth. Some groundwater is Ca-Cl or Na-HCO3 (2.5%) type that was due to agricultural activities. The NO3_N concetration of grondwater range from 10.2 mg/l to 26.9 mg/l, which show that this area is under nitrate pollution. δ15N-NO3 value of the groundwater is the origins of are a combination of animal wastes and man-made fertilizers.

Keywords agricultural field, groundwater, nitrate, δ15N

Article

Econ. Environ. Geol. 2012; 45(1): 23-30

Published online February 28, 2012

Copyright © THE KOREAN SOCIETY OF ECONOMIC AND ENVIRONMENTAL GEOLOGY.

Hydro-geochemical Nature and Nitrates Contamination Charecters of Groundwater in the Youngdong, Chungbuk Province

In-Gyerong Lee and Sang-Hoon Choi*

Department of Earth and Environmental Sciences, Chungbuk National University, Cheongju, 361-763, Korea

Correspondence to:

Sang-Hoon Choi

cshoon@chungbuk.ac.kr

Received: December 1, 2011; Accepted: February 12, 2012

Abstract

Major ions and nitrogen isotopic analyses were performed to determine the geochemical characters and to identify the source of nitrate of the shallow groundwater around agricultural field in the Youngdong area. The pH value of groundwater ranges from 60. to 8.2 (pH 7.2, mean). The average of EC, Eh and DO is 369 μS/cm (70~729 μS/cm), 165.6 mV (29~383.2 mV), 4.3 mg/L (1.8~8.0 mg/L) respectively. The ion concentraion of groundwater was in the order of Ca2+>Na2+>Mg2+>K2+ and HCO3>NO3>SO42>Cl>F-. Most of groundwater is Ca-HCO3 type. The groundwater was affected by water-rock interaction in the shallow depth. Some groundwater is Ca-Cl or Na-HCO3 (2.5%) type that was due to agricultural activities. The NO3_N concetration of grondwater range from 10.2 mg/l to 26.9 mg/l, which show that this area is under nitrate pollution. δ15N-NO3 value of the groundwater is the origins of are a combination of animal wastes and man-made fertilizers.

Keywords agricultural field, groundwater, nitrate, δ15N

    KSEEG
    Apr 30, 2024 Vol.57 No.2, pp. 107~280

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