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Ecological Risk Assessment of Chemicals Migrated from a Recycled Plastic ProductEcological Risk Assessment of Chemicals Migrated from a Recycled Plastic Product

Other Titles
Ecological Risk Assessment of Chemicals Migrated from a Recycled Plastic Product
Authors
노지연김민혁Woo Il KimYoung-Yeul Kang신선경Jong-GukKim권정환
Issue Date
2013
Publisher
환경독성보건학회
Keywords
Cadmium; Leachate; Lead; Phthalate esters; Recycled plastics
Citation
환경독성보건학회지, v.28, pp.1 - 5
Indexed
KCI
Journal Title
환경독성보건학회지
Volume
28
Start Page
1
End Page
5
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/104454
ISSN
2093-6400
Abstract
Objectives: Potential environmental risks caused by chemicals that could be released from a recycled plastic product were assessed using a screening risk assessment procedure for chemicals in recycled products. Methods: Plastic slope protection blocks manufactured from recycled plastics were chosen as model recycled products. Ecological risks caused by four model chemicals – di-(2-ethylhexyl)phthalate (DEHP), diisononyl phthalate (DINP), cadmium (Cd), and lead (Pb)–were assessed. Two exposure models were built for soil below the block and a hypothetic stream receiving runoff water. Based on the predicted no-effect concentrations for the selected chemicals and exposure scenarios, the allowable leaching rates from and the allowable contents in the recycled plastic blocks were also derived. Results: Environmental risks posed by slope protection blocks were much higher in the soil compartment than in the hypothetic stream. The allowable concentrations in leachate were 1.0×10-4, 1.2×10-5, 9.5×10-3, and 5.3×10-3 mg/L for DEHP, DINP, Cd, and Pb, respectively. The allowable contents in the recycled products were 5.2×10-3, 6.0×10-4, 5.0×10-1, and 2.7×10-1 mg/kg for DEHP, DINP, Cd, and Pb, respectively. Conclusions: A systematic ecological risk assessment approach for slope protection blocks would be useful for regulatory decisions for setting the allowable emission rates of chemical contaminants, although the method needs refinement.
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