Journal of Environmental Health Sciences (한국환경보건학회지)

Korean Society of Environmental Health (한국환경보건학회)
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Fate and Bioaccumulation of Zinc Oxide Nanoparticles in a Microcosm

산화아연 나노물질의 미소생태계 내 거동 및 생물축적

  • Kim, Eunjeong (Risk Assessment Division, National Institute of Environmental Research) ;
  • Lee, Jae-woo (Risk Assessment Division, National Institute of Environmental Research) ;
  • Jo, Eunhye (Risk Assessment Division, National Institute of Environmental Research) ;
  • Sung, Hwa Kyung (Risk Assessment Division, National Institute of Environmental Research) ;
  • Yoo, Sun Kyoung (Risk Assessment Division, National Institute of Environmental Research) ;
  • Kim, Kyung-tae (Risk Assessment Division, National Institute of Environmental Research) ;
  • Shin, Yu-jin (Risk Assessment Division, National Institute of Environmental Research) ;
  • Kim, Ji-eun (Risk Assessment Division, National Institute of Environmental Research) ;
  • Park, Sun-Young (Risk Assessment Division, National Institute of Environmental Research) ;
  • Eom, Ig-chun (Risk Assessment Division, National Institute of Environmental Research) ;
  • Kim, Pilje (Risk Assessment Division, National Institute of Environmental Research)
  • 김은정 (국립환경과학원 위해성평가연구과) ;
  • 이재우 (국립환경과학원 위해성평가연구과) ;
  • 조은혜 (국립환경과학원 위해성평가연구과) ;
  • 성화경 (국립환경과학원 위해성평가연구과) ;
  • 유선경 (국립환경과학원 위해성평가연구과) ;
  • 김경태 (국립환경과학원 위해성평가연구과) ;
  • 신유진 (국립환경과학원 위해성평가연구과) ;
  • 김지은 (국립환경과학원 위해성평가연구과) ;
  • 박선영 (국립환경과학원 위해성평가연구과) ;
  • 엄익춘 (국립환경과학원 위해성평가연구과) ;
  • 김필제 (국립환경과학원 위해성평가연구과)
  • Received : 2017.03.02
  • Accepted : 2017.05.17
  • Published : 2017.06.28
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Abstract

Objectives: Zinc oxide nanoparticles (ZnO NPs) are widely used in various commercial products, but they are exposed to the environment and can induce toxicity. In this study, we investigated the environmental fate and bioaccumulation of ZnO NPs in a microcosm. Methods: The microcosm was composed of water, soil (Lufa Soil 2.2) and organisms (Oryzias latipes, Neocaridina denticulata, Semisulcospira libertina). Point five and 5 mg/L of ZnO NPs were exposed in the microcosm for 14 days. Total Zn concentrations were measured using an Inductively Coupled Plasma Mass Spectrometer (ICP-MS) and intracellular NPs were observed using Transmission Electron Microscopy (TEM). Results: In the initial stages of exposure, the Zn concentrations in water increased in all exposure groups and then decreased, while the Zn concentration in soil increased after three hours for the 5 mg/L solution. Zn concentrations also showed increasing trends in N. denticulata and S. libertina at 0.5 and 5 mg/L, and in O. latipes at 5 mg/L. Accumulation of NPs was found in the livers of O. latipes and hepatopancreas of N. denticulata and S. libertina. Conclusions: In the early stages of exposure, ZnO NPs remained in the water, and then were transported to the soil and test species. Unlike other species, total Zn concentrations in N. denticulata and S. libertina increased for both 0.5 mg/L and 5 mg/L. Therefore, ZnO NPs were more easily accumulated in zoobenthos than in fish.

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