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Characteristics of heavy metals's exposure from playground flooring

놀이터 바닥재로부터 용출되는 중금속 노출 특성

  • Cho, Yoon A (Resource Recirculation Research Division, National Institute of Environmental Research Environmental Research Complex) ;
  • Kim, Woo Il (Resource Recirculation Research Division, National Institute of Environmental Research Environmental Research Complex) ;
  • Shin, Sun Kyoung (Resource Recirculation Research Division, National Institute of Environmental Research Environmental Research Complex) ;
  • Kang, Young Yeul (Resource Recirculation Research Division, National Institute of Environmental Research Environmental Research Complex) ;
  • Kim, Min Sun (Resource Recirculation Research Division, National Institute of Environmental Research Environmental Research Complex) ;
  • Jeong, Seong Kyoung (Resource Recirculation Research Division, National Institute of Environmental Research Environmental Research Complex) ;
  • Yeon, Jin Mo (Resource Recirculation Research Division, National Institute of Environmental Research Environmental Research Complex) ;
  • Jin, Na (Resource Recirculation Research Division, National Institute of Environmental Research Environmental Research Complex) ;
  • Lee, Ji Young (Resource Recirculation Research Division, National Institute of Environmental Research Environmental Research Complex)
  • 조윤아 (국립환경과학원 자원순환연구과) ;
  • 김우일 (국립환경과학원 자원순환연구과) ;
  • 신선경 (국립환경과학원 자원순환연구과) ;
  • 강영렬 (국립환경과학원 자원순환연구과) ;
  • 김민선 (국립환경과학원 자원순환연구과) ;
  • 정성경 (국립환경과학원 자원순환연구과) ;
  • 연진모 (국립환경과학원 자원순환연구과) ;
  • 김나 (국립환경과학원 자원순환연구과) ;
  • 이지영 (국립환경과학원 자원순환연구과)
  • Received : 2012.08.07
  • Accepted : 2012.11.27
  • Published : 2012.12.25

Abstract

The increasing use of recycling products results in the need for assessing the risk to human health. In this study heavy metals's contents of playground flooring were compared with rubber powder which is row material. And it is reviewed characteristics of heavy metals's exposure from absorption of skin, checking amount of dermal uptake for each heavy metal. Despite its high content, Zn had a very low migration rate with 0.1 $mg/cm^2$. This indicates that Zn is not easily released by surface contact. However, the contents of Fe and Al in flooring were 12 times higher than that of Zn and Fe, and Al showed migration rate 5 times higher than that of Zn. This implies that Fe and Al were derived from pigment in flooring. The measurement of dermal exposure to heavy metals at 6 playgrounds found higher level of exposure in Ba than in other heavy metals. It is assumed that despite high content of Zn, Ba had a higher exposure rate because five times as much Ba as Zn was darmal absorptionactor ($AF_{darmal}$).

재활용 제품의 사용이 증가함에 따라 이에 대한 위해성 평가가 필요한 실정이다. 본 연구에서는 재활용 제품 중 재활용 고무분말을 이용한 놀이터용 바닥재와 해당 고무분말의 중금속 함량을 비교하였다. 또한 각각의 물질이 경피로 전이되는 양을 확인하여 피부에 흡수되는 중금속 노출 특성을 살펴보았다. 아연의 경우 함량이 높은데 반해 전이량이 0.1 $mg/cm^2$으로 매우 낮았는데 이는 아연은 표면 접촉으로는 잘 묻어나지 않는다는 것을 나타낸다. 그러나 철과 알루미늄의 경우, 함량이 바닥재에서 12 배 높게 나타났고, 전이량이 아연보다 약 5 배 높게 나타났다. 이것은 철과 알루미늄이 바닥재에 사용된 안료에서 기인했다는 것을 말한다. 놀이터 6 개소를 대상으로 피부 흡수에 의한 중금속 노출량을 산정한 결과, Ba의 경우 타 중금속에 비하여 비교적 높게 산정되었다. Zn의 함량이 높음에도 불구하고 Ba의 노출량이 더 높은 것은 Ba의 피부흡수율이 Zn에 비해 약 5 배 높기 때문인 것으로 판단된다.

Keywords

References

  1. Y. W. Lim, 'Hazardous materials survey and risk assessment of synthetic turf field and rubber powder(I)', Ministry of Environment, 2009.
  2. CPSC Staff, 'analysis and assessment of synthetic Turf "Grass Blades"', CPSC, 2008.
  3. ASTM Standard E1792-96E, 'Standard Specification for Wipe Sampling Materials for Lead in Surface Dust', ASTM International, West Conshohocken, PA, www.astm.org.
  4. Korean Agency for Technology and standards No. KS M 6956:2010, 'Test method for estimating the toxicity of recycled rubber powder', 2010.
  5. U.S. Environmental Protection Agency Air Pollution Prevention and Control Division, 'Evaluation of the Effectiveness of Coatings in Reducing Dislodgeable Arsenic, Chromium, and Copper from CCA Treated Wood', QAPP Revision 6, North Carolina 27709, 2003.
  6. B. Bocca, G. Forte, F. Petrucci, S. Costantini and P. Izzo, Sci. Total Environ., 407(7), 2183-2190 (2009). https://doi.org/10.1016/j.scitotenv.2008.12.026
  7. D. Jung, S. O. Han, K. P. Nam, 'Study on risk and management of waste timber from railroad', National institute environmental research, 2010.
  8. Health Canada, 'Federal contaminated site risk assessment in canada Part I : Guidance on human health preliminary quantitative risk assessment', Ottawa, 2004.
  9. National institute environmental research, 'risk assessment guidebook', 2011.
  10. Korean agency for technology and standards, http://www.sizekorea.kats.go.kr, Assessed 4 June 2010.
  11. Ajou university, http://www.kefh.or.kr, Assessed 4 December, 2008.

Cited by

  1. Analysis of Hazardous Heavy Metal in Colored Materials of Playground Facility for Children vol.30, pp.2, 2015, https://doi.org/10.14346/JKOSOS.2015.30.2.14