Exposure assessment of atmospheric antimony using an atmospheric dispersion model

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  • NAGAI Takashi
    Research Center for Chemical Risk Management Graduate School of Life and Environmental Sciences , University of Tsukuba Present address: National Institute for Agro-Environmental Sciences
  • TSUNEMI Kiyotaka
    Research Center for Chemical Risk Management
  • TOKAI Akihiro
    Research Center for Chemical Risk Management Present address: Graduate School of Engineering , Osaka University

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Other Title
  • 大気拡散モデルによる大気中アンチモンの曝露解析
  • タイキ カクサン モデル ニ ヨル タイキ チュウ アンチモン ノ バクロ カイセキ

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Abstract

We estimated atmospheric antimony concentration and conducted the human exposure assessment to quantify the level of human health risk stemming from antimony. The atmospheric antimony concentration at spatial resolutions of 5×5 km was estimated by an atmospheric dispersion model AIST-ADMER. The emission contribution of industrial factories, thermal power plants, waste processing plants, and vehicles were considered as emission sources of antimony. The amount of each emission was allocated to regional emission grid data based on various statistical data. Firstly the validity of model estimation, except for a roadside site, was confirmed by comparing estimated and measured atmospheric antimony concentrations. The concentration of atmospheric antimony at the roadside site was locally high due to emissions from motor vehicles, and we found that the model at spatial resolutions of 5 km underestimated the concentration. Subsequently, roadside antimony concentration was estimated by introducing an ADMER sub-grid module at resolutions of 100 m. The agreement between measured and estimated values was almost within the range of factor 2. These estimated exposure data are expected to be utilized for antimony risk assessment.

Journal

  • ENVIRONMENTAL SCIENCE

    ENVIRONMENTAL SCIENCE 22 (2), 61-72, 2009

    SOCIETY OF ENVIRONMENTAL SCIENCE, JAPAN

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