논문 상세보기
pp.1563-1573
The aim of this study was to evaluate the occurrence of vanadium in Jeju Island groundwater, focusing on the spatio-temporal patterns and geochemical controlling factors of vanadium. For this, we collected two sets of groundwater data: 1) concentrations of major constituents of 2,595 groundwater samples between 2008 and 2014 and 2) 258 groundwater samples between December 2006 and June 2008. The concentrations of groundwater vanadium were in the range of 0.2 71.0 μg/L (average, 12.0 μg/L) and showed local enrichments without temporal/seasonal variation. This indicated that vanadium distribution was controlled by 1) the geochemical/mineralogical composition and dissolution processes of original materials (i.e., volcanic rock) and 2) the flow and chemical properties of groundwater. Vanadium concentration was significantly positively correlated with that of major ions (Cl-, Na+, and K+) and trace metals (As, Cr, and Al), and with pH, but was negatively correlated with NO3-N concentration. The high concentrations of vanadium (>15 μg/L) occurred in typically alkaline groundwater with high pH ( 8.0), indicating that a higher degree of water-rock interaction resulted in vanadium enrichment. Thus, higher concentrations of vanadium occurred in groundwater of Na-Ca-HCO3, Na-Mg-HCO3 and Na-HCO3 types and were remarkably lower in groundwater of Na-Ca-NO3(Cl) type that represented the influences from anthropogenic pollution.
1. 서 론
2. 연구 지역 및 연구 방법
2.1. 연구 지역 개관
2.2. 연구 방법
2.2.1. 조사 지점 및 시료 채취
2.2.2. 분석 방법
3. 결과 및 고찰
3.1. 지하수 수질 특성
3.2. 바나듐 농도와 시공간적 분포 특성
3.3. 주요 용존이온 및 미량성분과의 관계: 바나듐의기원 평가
3.4. 바나듐 부화의 지화학적 조절요인 고찰
3.4.1. pH와의 관계
3.4.2. 수질유형과의 관계
4. 결 론
감사의 글
REFERENCES
