Journal of Environmental Health Sciences (한국환경보건학회지)

Korean Society of Environmental Health (한국환경보건학회)
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Exposure and Risk Assessment of Benzene and PM10 for Sub-populations using Monte-Carlo Simulations

Monte-Carlo 모의실험을 통한 부분 인구집단별 벤젠 및 PM10의 노출 및 위해성 평가

  • Park, Jinhyeon (Department of Occupational Health, Daegu Catholic University) ;
  • Yang, So Young (School of Energy Engineering, Kyungpook National University) ;
  • Park, Yunkyung (Department of Occupational Health, Daegu Catholic University) ;
  • Ryu, Hyeonsu (Department of Occupational Health, Daegu Catholic University) ;
  • Kim, Eunchae (Department of Occupational Health, Daegu Catholic University) ;
  • Choe, Youngtae (Department of Occupational Health, Daegu Catholic University) ;
  • Heo, Jung (Department of Occupational Health, Daegu Catholic University) ;
  • Cho, Mansu (Department of Occupational Health, Daegu Catholic University) ;
  • Yang, Wonho (Department of Occupational Health, Daegu Catholic University)
  • 박진현 (대구가톨릭대학교 산업보건학과) ;
  • 양소영 (경북대학교 에너지공학부) ;
  • 박윤경 (대구가톨릭대학교 산업보건학과) ;
  • 류현수 (대구가톨릭대학교 산업보건학과) ;
  • 김은채 (대구가톨릭대학교 산업보건학과) ;
  • 최영태 (대구가톨릭대학교 산업보건학과) ;
  • 허정 (대구가톨릭대학교 산업보건학과) ;
  • 조만수 (대구가톨릭대학교 산업보건학과) ;
  • 양원호 (대구가톨릭대학교 산업보건학과)
  • Received : 2019.06.04
  • Accepted : 2019.06.20
  • Published : 2019.06.30
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Abstract

Objectives: The Korea Ministry of Environment regulates concentrations of hazardous air pollutants (HAPs) through Atmosphere Environmental Standards to protect public health from HAPs. However, simply determining the exceedance of HAP concentrations has several limitations and more comprehensive assessment is required. In addition, integrated risk assessment is needed considering exposure in all microenvironments, including outdoor as well as indoor environments. The purpose of this study was to assess the differences in risk by sub-population groups according to time-activity patterns and reported concentrations, as well as the lifetime risk for Koreans. Methods: In this study, we calculated time-weighted average exposure concentrations for benzene and $PM_{10}$ among preschool-age children, students, housewifes, workers, and the elderly using residential time and concentrations for indoor (house, school or workplace, other), outdoor, and transport by the meta-analysis method. The risk assessments were conducted by excess cancer risk and disease death risk using 1,000,000 Monte-Carlo simulations for probabilistic analysis. Results: Preschool-age children, students, housewifes, workers, and the elderly spent 91.9, 86.0, 79.8, 82.2, and 77.3% of their day in their house, workplace, or school, respectively. The more than 99% excess cancer risk for benzene exceed 1.0E-06 in all sub-populations and lifetime. The acute disease death risk for $PM_{10}$ for housewifes and workers for lifetime were 3.35E-04 and 3.18E-04, and chronic disease death risks were 2.84E-03 and 2.70E-03, respectively. Conclusions: The risk of benzene and $PM_{10}$ by sub-population group and for the lifetime of housewifes and workers were assessed. Benzene showed risky results for this study. All disease death risks of $PM_{10}$ were higher than 1.0E-04 and showed different risks by sub-population. This study can be used as a basis for lifetime exposure and risk assessment to benzene and $PM_{10}$.

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