Journal
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
Volume 25, Issue 15, Pages 14989-14995Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s11356-018-1693-z
Keywords
PM2.5 exposure; Air pollution; Lung function; School; Children; Panel study
Categories
Funding
- National Natural Science Foundation of China [91543111, 21277135, 4170123]
- Beijing Natural Science Foundation [7172145]
- National High-level Talents Special Support Plan of China for Young Talents
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The association between exposure to ambient particulate matter (PM) and reduced lung function parameters has been reported in many works. However, few studies have been conducted in developing countries with high levels of air pollution like China, and little attention has been paid to the acute effects of short-term exposure to air pollution on lung function. The study design consisted of a panel comprising 86 children from the same school in Nanjing, China. Four measurements of lung function were performed. A mixed-effects regression model with study participant as a random effect was used to investigate the relationship between PM2.5 and lung function. An increase in the current day, 1-day and 2-day moving average PM2.5 concentration was associated with decreases in lung function indicators. The greatest effect of PM2.5 on lung function was detected at 1-day moving average PM2.5 exposure. An increase of 10 mu g/m(3) in the 1-day moving average PM2.5 concentration was associated with a 23.22 mL decrease (95% CI: 13.19, 33.25) in Forced Vital Capacity (FVC), a 18.93 mL decrease (95% CI: 9.34, 28.52) in 1-s Forced Expiratory Volume (FEV1), a 29.38 mL/s decrease (95% CI: -0.40, 59.15) in Peak Expiratory Flow (PEF), and a 27.21 mL/s decrease (95% CI: 8.38, 46.04) in forced expiratory flow 25-75% (FEF25-75%). The effects of PM2.5 on lung function had significant lag effects. After an air pollution event, the health effects last for several days and we still need to pay attention to health protection.
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