Environmental Engineering Research

Korean Society of Environmental Engineers (대한환경공학회)
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Development and Assessment of a Dynamic Fate and Transport Model for Lead in Multi-media Environment

  • Ha, Yeon-Jeong (Environmental Planning Institute, Graduate School of Environmental Studies, Seoul National University) ;
  • Lee, Dong-Soo (Environmental Planning Institute, Graduate School of Environmental Studies, Seoul National University)
  • Published : 2009.03.31
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Abstract

The main objective was to develop and assess a dynamic fate and transport model for lead in air, soil, sediment, water and vegetation. Daejeon was chosen as the study area for its relatively high contamination and emission levels. The model was assessed by comparing model predictions with measured concentrations in multi-media and atmospheric deposition flux. Given a lead concentration in air, the model could predict the concentrations in water and soil within a factor of five. Sensitivity analysis indicated that effective compartment volumes, rain intensity, scavenging ratio, run off, and foliar uptake were critical to accurate model prediction. Important implications include that restriction of air emission may be necessary in the future to protect the soil quality objective as the contamination level in soil is predicted to steadily increase at the present emission level and that direct discharge of lead into the water body was insignificant as compared to atmospheric deposition fluxes. The results strongly indicated that atmospheric emission governs the quality of the whole environment. Use of the model developed in this study would provide quantitative and integrated understanding of the cross-media characteristics and assessment of the relationships of the contamination levels among the multi-media environment.

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