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http://dx.doi.org/10.17137/korrae.2019.27.3.63

Human Risk Assessment of Soil Contaminated with Heavy Metal by Waste Reclaimed in Railway Maintenance Site  

Braatz, Hatsue Minato (TerraTherm Asia, Inc)
Jung, Minjung (College of liberal Arts, Anyang University)
Moon, Seheum (Ministry of Environment, Climate Change Policy Bureau, International Cooperation Division)
Park, Jinkyu (Ecowillplus Co, Ltd)
Publication Information
Journal of the Korea Organic Resources Recycling Association / v.27, no.3, 2019 , pp. 63-74 More about this Journal
Abstract
This study carried out a human risk assessment of Cu, Pb, Zn and Ni contained in soil contaminated by improperly buried heavy metal wastes in railway sites. The purpose of the human risk assessment is to derive the need for soil remediation and factors that should be considered during soil remediation. Risk assessment was performed in accordance with the Environment Ministry's Risk Assessment Guidelines. The results of the human risk assessment of contaminated heavy metal soil contaminated by improperly buried waste in the railway site were presented after the process of determining exposure concentration, calculating exposure, and determining carcinogenic hazards. The heavy metal content of soil is 621.3 Cu mg/kg, 2,824.5 Pb mg/kg, 1,559.1 Zn mg/kg and 45 Ni mg/kg, which is the exposure concentration of the target contaminant. The results of human exposure according to exposure pathways were high in the order of soil outdoor dust >soil ingestion >soil contact, and Pb >Zn >Cu >Ni were higher in order of contaminant. The carcinogenic and noncarcinogenic risks of soil contaminated with heavy metal waste were higher than the allowable carcinogenic risks (TCR> $10^{-6}$) and the risk index (Hi < 1.0) suggested by USEPA. Therefore, the site needs to be remediated.
Keywords
Human Risk Assessment; Heavy Metal; Reclaimed waste; Railway maintenance site; Exposure Scenario;
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Times Cited By KSCI : 2  (Citation Analysis)
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