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자료유형
학술저널
저자정보
저널정보
한국환경과학회 한국환경과학회지 한국환경과학회지 제25권 제11호
발행연도
2016.11
수록면
1,563 - 1,573 (11page)

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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<sup>+</sup>, and K<sup>+</sup>) and trace metals (As, Cr, and Al), and with pH, but was negatively correlated with NO<sub>3</sub>-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-HCO<sub>3</sub>, Na-Mg-HCO<sub>3</sub> and Na-HCO<sub>3</sub> types and were remarkably lower in groundwater of Na-Ca-NO<sub>3</sub>(Cl) type that represented the influences from anthropogenic pollution.

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