- Hydrogeochemical Characteristics of Groundwater in the Small Waterworks at Ulju Region, Ulsan
- Kim, Dongsoo;Kim, MoonSu;Jo, Sungjin;Kim, Ikhyun;Lee, Heonmin;Hwang, Jongyoen;Park, Sunhwa;Jo, Hunje;Kim, Taeseung;Kim, Hyunkoo;
- Soil and Groundwater Division, National Institute of Environmental Research;Soil and Groundwater Division, National Institute of Environmental Research;Soil and Groundwater Division, National Institute of Environmental Research;Soil and Groundwater Division, National Institute of Environmental Research;Soil and Groundwater Division, National Institute of Environmental Research;Soil and Groundwater Division, National Institute of Environmental Research;Soil and Groundwater Division, National Institute of Environmental Research;Soil and Groundwater Division, National Institute of Environmental Research;Soil and Groundwater Division, National Institute of Environmental Research;Soil and Groundwater Division, National Institute of Environmental Research;
- 울산 울주지역 소규모 수도시설 지하수의 수리지화학적 특성 연구
- 김동수;김문수;조성진;김익현;이헌민;황종연;박선화;조훈제;김태승;김현구;
- 국립환경과학원 토양지하수연구과;국립환경과학원 토양지하수연구과;국립환경과학원 토양지하수연구과;국립환경과학원 토양지하수연구과;국립환경과학원 토양지하수연구과;국립환경과학원 토양지하수연구과;국립환경과학원 토양지하수연구과;국립환경과학원 토양지하수연구과;국립환경과학원 토양지하수연구과;국립환경과학원 토양지하수연구과;
Abstract
The hydrogeochemical characteristics of groundwater in the small waterworks are examined with 81 groundwater samples in Ulju region, Ulsan. The pH ranged in 6.3-8.2 and did not exceed the drinking water standards. Electrical conductivity ranged from $50{\mu}S/cm$ to $1,719{\mu}S/cm$ . It indicated that the electrical conductivities in groundwaters at the study area are relatively low, compared with other groundwaters in Ulsan area. The calcium concentrations in groundwaters ranged from 3.55 to 113.01 mg/L, and sodium concentrations ranged from 2.02 to 65.50 mg/L. Nitrate concentrations ranged from 0 to 100.56 mg/L and potassium concentrations ranged from N.D (not detected) to 2.50 mg/L. Major cations and anions were mainly derived from the water-rock interaction involving feldspar, gypsum and calcite. The groundwaters were mainly the $Ca-(Na)-HCO_3$ type, classified as the early stage of groundwater evolutions. The correlation between electrical conductivities and Ca concentrations in groundwaters was relatively high ($R^2=0.74$ ). In the correlations between ions, the correlation coefficient between $SO_4$ and Ca was 0.65 and between Mg and $HCO_3$ was 0.65.
Keywords: Groundwater;Water-rock interaction;Cation;Anion;Correlation analysis;
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