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Risk assessment of particulate matter by considering time-activity-pattern and major microenvironments for preschool children living in Seoul, South Korea

Authors
 Kyungjun Jeong  ;  Jiyeon Hong  ;  Yongjin Lee  ;  Jiyeon Yang  ;  Youngwook Lim  ;  Dongchun Shin  ;  Changsoo Kim 
Citation
 ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH, Vol.28(28) : 37506-37519, 2021-07 
Journal Title
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
ISSN
 0944-1344 
Issue Date
2021-07
MeSH
Air Pollutants* / analysis ; Child, Preschool ; Environmental Exposure / analysis ; Environmental Monitoring ; Female ; Humans ; Male ; Particulate Matter* / analysis ; Republic of Korea ; Risk Assessment ; Seoul
Keywords
Contribution ; Exposure assessment ; Particulate matter ; Preschool children ; Risk assessment
Abstract
Preschool children aged 3-6 years are vulnerable to exposed to particulate matter ("PM10" and "PM2.5"). It is required in evaluating the risk based on dose of preschool children. Microenvironments which preschool children mainly visited were classified. Inhalation type was adapted in each microenvironment in consideration of intensity of activity. The exposure scenario was described as preschool children had been living in Seoul, South Korea, and dose was calculated by considering time-activity-pattern with major microenvironments and inhalation type of preschool children for 24 h. Monte-Carlo simulation technique is used to estimate dose of particulate matter in probabilistic distribution by age and sex. The contribution of exposure by microenvironments and inhalation type was calculated. Risk assessment was performed based on WHO interim target-3 24-h concentration in order to estimate. Sensitivity analysis was performed to determine the effective variable of dose. As a result of the study, the dose of PM was higher for boys than girls and tended to decrease with age. The overall contributions of PM doses by microenvironments were daycare center, home, other facilities, transit, and outdoors, respectively, although differed between daycare center and home priority by age and sex. Especially, the contribution of daycare center and home was very high, accounting over 85% of the total. The overall contributions of PM doses by inhalation type were "run," "stable," "sleep," and "walk inhalation," respectively. The results of hazard quotient showed that "PM10" exceeded the WHO interim target-3 24-h concentration standard by about 10% and "PM2.5" exceeded about half. Through sensitivity analysis, PM concentration was confirmed as a major influence variable for doses. This study was able to affirm the overall exposure status of "PM10" and "PM2.5" for preschool children, and this is expected to be used in regulation and public health.
Full Text
https://link.springer.com/article/10.1007%2Fs11356-021-13106-2
DOI
10.1007/s11356-021-13106-2
Appears in Collections:
1. College of Medicine (의과대학) > Research Institute (부설연구소) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Preventive Medicine (예방의학교실) > 1. Journal Papers
Yonsei Authors
Kim, Chang Soo(김창수) ORCID logo https://orcid.org/0000-0002-5940-5649
Shin, Dong Chun(신동천) ORCID logo https://orcid.org/0000-0003-4252-2280
Yang, Ji Yeon(양지연)
Lee, Yong Jin(이용진)
Lim, Young Wook(임영욱) ORCID logo https://orcid.org/0000-0001-8845-2850
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/185465
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