Korea University · Environmental Science
Professor Seong-Taek Yun's research lab specializes in environmental geochemistry and hydrogeology, focusing on the fate and sources of contaminants in groundwater and urban sediments. The lab investigates nitrate pollution in alluvial aquifers, particularly in relation to agricultural and urban land use, using isotopic tracers and hydrochemical analysis. It also examines heavy metal distribution and speciation in urban roadside sediments, emphasizing source apportionment and environmental risk assessment. The lab integrates field sampling, chemical analysis, and multivariate statistical methods to address water quality and environmental pollution issues in urban and agricultural settings.
Figures are computed from collected data and may differ slightly.
Abstract To investigate the origin and behaviour of nitrate in alluvial aquifers adjacent to Nakdong River, Korea, we chose two representative sites (Wolha and Yongdang) having similar land‐use characteristics but different geology. A total of 96 shallow groundwater samples were collected from irrigation and domestic wells tapping alluvial aquifers. About 63% of the samples analysed had nitrate concentrations that exceeded the Korean drinking water limit (44·3 mg l −1 NO 3 − ), and about 35% of
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