Hanyang University · Environmental Science
Professor Eun-Ji Won's research lab specializes in environmental isotope biogeochemistry, focusing on stable isotope applications to trace nutrient and pollutant dynamics in marine and terrestrial ecosystems. The lab employs compound-specific isotope analysis—particularly nitrogen and carbon isotopes in amino acids and bulk tissues—to reconstruct food web structures, assess trophic magnification of persistent organic pollutants, and evaluate the ecological impacts of pesticides and seafood fraud. A key research direction involves developing and applying advanced isotope techniques for environmental source tracking, pollution risk assessment, and biodiversity monitoring.
Figures are computed from collected data and may differ slightly.
The trophic magnification of persistent organic pollutants (POPs), which is the relationship between POP concentration and the trophic position (TPs) of an organism, is considered an important factor for prioritizing chemicals of concern in the environment. Organismal TPs are typically based on nitrogen isotope ratios of bulk tissue (δ<sup>15</sup>N<sub>bulk</sub>). In this study, nitrogen isotope ratios of amino acids (δ<sup>15</sup>N<sub>AAs</sub>), a more precise approach for TP estimation (T
Explaining food web dynamics, stability, and functioning depend substantially on understanding of feeding relations within a community. Bulk stable isotope ratios (SIRs) in natural abundance are well-established tools to express direct and indirect feeding relations as continuous variables across time and space. Along with bulk SIRs, the SIRs of individual amino acids (AAs) are now emerging as a promising and complementary method to characterize the flow and transformation of resources across a
Unintended pesticide pollution in soil, crops, and adjacent environments has caused several issues for both pesticide users and consumers. For users, pesticides utilized should provide higher yield and lower persistence while considering both the environment and agricultural products. Most people are concerned that agricultural products expose humans to pesticides accumulating in vegetation. Thus, many countries have guidelines for assessing and managing pesticide pollution, for farming in diver
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