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Human Risk Assessment of Perchloroethylene Considering Multi-media Exposure

다매체 노출을 고려한 Perchloroethylene의 인체위해성평가연구

  • Seo, Jungkwan (National Institute of Environmental Research) ;
  • Kim, Taksoo (National Institute of Environmental Research) ;
  • Jo, Areum (National Institute of Environmental Research) ;
  • Kim, Pilje (National Institute of Environmental Research) ;
  • Choi, Kyunghee (National Institute of Environmental Research)
  • Received : 2014.09.29
  • Published : 2014.10.31

Abstract

Objectives: Perchloroethylene (PCE) is a volatile chemical widely used as a solvent in the dry-cleaning and textile processing industries. It was evaluated as Group 2 "probably carcinogenic to humans" by the Integrated Risk Information System (IRIS) of the United State Environmental Protection Agency (U.S. EPA) in 2012. In order to provide a scientific basis for establishing risk management measures for chemicals on the national priority substances list, aggregate risk assessment was conducted for PCE, included in the top-10 substances. Methods: We conducted the investigation and monitoring of PCE exposure (e.g., exposure scenario, detection levels, and exposure factors, etc.) and assessed its multi-media (e.g., outdoor air, indoor air, and ground water) exposure risk with a deterministic and probabilistic approach. Results: In human risk assessment (HRA), the level of human exposure was higher in the younger age group. The exposure level through inhalation at home was the highest among the exposure routes. Outdoor air or uptake of drinking water represented less than 1% of total contributions to PCE exposure. These findings suggested that the level of risk was negligible since the Hazard Index (HI) induced by HRA was below one among all age groups, with a maximum HI value of 0.17 when reasonable maximum exposure was applied. Conclusion: In conclusion, it was suggested that despite low exposure risk, further studies are needed considering main sources, including occupational exposure.

Keywords

References

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