Heavy metal exposure assessment of recycled plastic buckets

Kim, Min-Sun; Kim, Woo Il; Shin, Sun-Kyoung; Kang, Young-Yeul; Cho, Yoon-A; Jeong, Seong-Kyeong; Jin, Na; Yeon, Jin-Mo; Lee, Ji-Young

doi:10.5806/ast.2013.26.1.067

Cited by 1 publication

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“…It is generally believed that recycled plastic products contain more impurities and potentially more chemical contaminants such as metals than those manufactured from plastic pellets without recycling [ 1 , 4 ]. Under the Korean act on the promotion of saving and recycling of resources [ 5 ], it is required to evaluate the usage and methodology of plastic recycling before the recycling process and the resulting product is approved by the Ministry of Environment.…”

Section: Introductionmentioning

confidence: 99%

Ecological Risk Assessment of Chemicals Migrated from a Recycled Plastic Product

Roh

Kim

et al. 2013

Environ Health Toxicol

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ObjectivesPotential 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.MethodsPlastic 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.ResultsEnvironmental 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.ConclusionsA 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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Section: Introductionmentioning

confidence: 99%