Department of Environmental Health Sciences, Graduate School of Public Health, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea.
Institute of Health and Environment, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea.
Environ Sci Pollut Res Int. 2018 Jun;25(17):16945-16950. doi: 10.1007/s11356-018-1889-2. Epub 2018 Apr 6.
Ambient particulate matter (PM) concentrations at monitoring stations were often used as an indicator of population exposure to PM in epidemiological studies. The correlation between personal exposure and ambient concentrations of PM varied because of diverse time-activity patterns. The aim of this study was to determine the relationship between personal exposure and ambient concentrations of PM and PM with minimal impact of time-activity pattern on personal exposure. Performance of the MicroPEM, v3.2 was evaluated by collocation with central ambient air monitors for PM and PM. A field technician repeatedly conducted measurement of 24 h personal exposures to PM and PM with a fixed time-activity pattern of office worker over 26 days in Seoul, Korea. The relationship between the MicroPEM and the ambient air monitor showed good linearity. Personal exposure and ambient concentrations of PM were highly correlated with a fixed time-activity pattern compared with PM. The finding implied a high infiltration rate of PM and low infiltration rate of PM. The relationship between personal exposure and ambient concentrations of PM and PM was different for high level episodes. In the Asian dust episode, staying indoors could reduce personal exposure to PM. However, personal exposure to PM could not be reduced by staying indoors during the fine dust advisory episode.
环境中颗粒物（PM）浓度常被用作流行病学研究中人群暴露于 PM 的指标。由于时间活动模式的多样性，个人暴露与环境 PM 浓度之间的相关性也有所不同。本研究旨在确定个人暴露与环境 PM 浓度和 PM 之间的关系，同时最小化时间活动模式对个人暴露的影响。通过与中央环境空气监测器对 PM 和 PM 进行对比，评估了 MicroPEM，v3.2 的性能。在韩国首尔，一名现场技术人员在 26 天内，以固定的上班族时间活动模式，反复测量了 24 小时的个人 PM 和 PM 暴露情况。MicroPEM 与环境空气监测器之间的关系呈良好的线性。与 PM 相比，具有固定时间活动模式的个人暴露和环境 PM 浓度与 PM 高度相关。这一发现表明 PM 的渗透率较高，PM 的渗透率较低。个人暴露与环境 PM 和 PM 浓度之间的关系因高水平事件而不同。在亚洲沙尘事件中，待在室内可以减少个人对 PM 的暴露。然而，在细尘警报期间，待在室内并不能减少个人对 PM 的暴露。
