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Evaluation of Population Exposures to PM2.5 before and after the Outbreak of COVID-19

서울시 구로구에서 COVID-19 발생 전·후 초미세먼지(PM2.5) 농도 변화에 따른 인구집단 노출평가

  • Kim, Dongjun (Department of Occupational Health, Daegu Catholic University) ;
  • Min, Gihong (Department of Occupational Health, Daegu Catholic University) ;
  • Choe, Yongtae (Department of Occupational Health, Daegu Catholic University) ;
  • Shin, Junshup (Department of Occupational Health, Daegu Catholic University) ;
  • Woo, Jaemin (Department of Occupational Health, Daegu Catholic University) ;
  • Kim, Dongjun (Department of Occupational Health, Daegu Catholic University) ;
  • Shin, Junghyun (Department of Occupational Health, Daegu Catholic University) ;
  • Jo, Mansu (Department of Occupational Health, Daegu Catholic University) ;
  • Sung, Kyeonghwa (Center of Environmental Health Monitoring, Daegu Catholic University) ;
  • Choi, Yoon-hyeong (Department of Preventive Medicine, Gachon University College of Medicine) ;
  • Lee, Chaekwan (Institute of Environmental and Occupational Medicine, Medical School, Inje University) ;
  • Choi, Kilyoong (Department of Environmental Energy Engineering, Anyang University) ;
  • Yang, Wonho (Department of Occupational Health, Daegu Catholic University)
  • 김동준 (대구가톨릭대학교 산업보건학과) ;
  • 민기홍 (대구가톨릭대학교 산업보건학과) ;
  • 최영태 (대구가톨릭대학교 산업보건학과) ;
  • 신준섭 (대구가톨릭대학교 산업보건학과) ;
  • 우재민 (대구가톨릭대학교 산업보건학과) ;
  • 김동준 (대구가톨릭대학교 산업보건학과) ;
  • 신정현 (대구가톨릭대학교 산업보건학과) ;
  • 조만수 (대구가톨릭대학교 산업보건학과) ;
  • 성경화 (대구가톨릭대학교 환경보건모니터링센터) ;
  • 최윤형 (가천대학교 의과대학 예방의학교실) ;
  • 이채관 (인제대학교 의과대학 환경.산업의학연구소) ;
  • 최길용 (안양대학교 환경에너지공학과) ;
  • 양원호 (대구가톨릭대학교 산업보건학과)
  • Received : 2021.10.28
  • Accepted : 2021.11.25
  • Published : 2021.12.31

Abstract

Background: The coronavirus disease (COVID-19) has caused changes in human activity, and these changes may possibly increase or decrease exposure to fine dust (PM2.5). Therefore, it is necessary to evaluate the exposure to PM2.5 in relation to the outbreak of COVID-19. Objectives: The purpose of this study was to compare and evaluate the exposure to PM2.5 concentrations by the variation of dynamic populations before and after the outbreak of COVID-19. Methods: This study evaluated exposure to PM2.5 concentrations by changes in the dynamic population distribution in Guro-gu, Seoul, before and after the outbreak of COVID-19 between Jan and Feb, 2020. Gurogu was divided into 2,204 scale standard grids of 100 m×100 m. Hourly PM2.5 concentrations were modeled by the inverse distance weight method using 24 sensor-based air monitoring instruments. Hourly dynamic population distribution was evaluated according to gender and age using mobile phone network data and time-activity patterns. Results: Compared to before, the population exposure to PM2.5 decreased after the outbreak of COVID-19. The concentration of PM2.5 after the outbreak of COVID-19 decreased by about 41% on average. The variation of dynamic population before and after the outbreak of COVID-19 decreased by about 18% on average. Conclusions: Comparing before and after the outbreak of COVID-19, the population exposures to PM2.5 decreased by about 40%. This can be explained to suggest that changes in people's activity patterns due to the outbreak of COVID-19 resulted in a decrease in exposure to PM2.5.

Keywords

Acknowledgement

본 연구는 환경부의 재원으로 한국환경산업기술원의 생활공감환경보건기술사업의 지원을 받아 수행되었습니다(과제번호: 2018001350001).

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