|
KMID : 1156220160420010001
|
|
Journal of Environmental Health Sciences
2016 Volume.42 No. 1 p.1 ~ p.9
|
|
|
Time-activity Patterns and PM2.5 Exposure of the Elderly in Urban and Rural Areas
|
|
임채윤:Lim Chae-Yun
곽수영:Guak Soo-Young/이기영:Lee Ki-Young/홍윤철:Hong Yun-Chul
|
|
|
Abstract
|
|
|
Objectives: Personal exposure to air pollution is affected by contact over time and by location. The purpose of this study was to determine the relationship between personal exposure to PM2.5 and the time-activity patterns of the elderly in urban and rural areas.
Methods: A total of 44 elderly participants were recruited for a 24-hour PM2.5 personal exposure measurement. Twenty-four were from Seoul (urban area) and 20 were from Asan (rural area). Energy expenditure and spatiotemporal positioning were monitored through PM2.5 measurement. Spearman correlation analysis was conducted to determine the relationship between PM2.5 and time-activity pattern.
Results: Daily average PM2.5 personal exposures were 19.1 ± 9.7 μg/m3 in Seoul and 29.1 ± 16.9 μg/m3 in Asan. Although outdoor exposure was higher in Seoul than in Asan, residential indoor exposure was higher in Asan than in Seoul. Higher PM2.5 personal exposure in Asan could be explained by longer time in residential indoor environments and higher indoor PM2.5 concentrations. Seoul elderly had higher energy expenditure, which may be due to the use of mass transportation.
Conclusion: Personal exposure to PM2.5 was higher among Asan elderly than Seoul elderly because of high residential indoor concentrations and longer residential time. Lack of energy spent and higher personal exposure to PM2.5 might have led to higher risk among the Asan elderly.
|
|
|
KEYWORD
|
|
|
Air pollution, personal exposure, , regional variation, time-activity patterns
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|