Acute effects of exposure to PM 2.5 components on the lung function of primary school students
10.16835/j.cnki.1000-9817.2024225
- VernacularTitle:空气PM 2.5成分的混合暴露对小学生肺功能的急性影响
- Author:
CHEN Lu, ZHANG Jingwei, YUAN Wen, DONG Yanhui, CUI Yushan
1
Author Information
1. Department of Personnel Science and Education, Tianjin Center for Disease Control and Prevention, Tianjin (300011) , China
- Publication Type:Journal Article
- Keywords:
Particulate matter;
Environmental exposure;
Lung;
Regression analysis;
Students
- From:
Chinese Journal of School Health
2024;45(7):1031-1035
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To analyze the acute effects of exposure to fine particulate matter (PM2.5) components on primary school students lung function, so as to provide a scientific basis for protecting childrens respiratory health.
Methods:From 2019 to 2021, the study selected a total of 2 120 primary school students from grades 3 to 5 in Tianjin using a stratified random sampling method to undergo lung function tests. At the same time, the shortterm exposure levels were simulated by combining PM2.5 components and student addresses, and the acute impact of PM2.5 exposure on primary school students lung function was analyzed by generalized linear models (GLM) and weighted quantile sum (WQS) regression models.
Results:The average daily concentration of PM2.5 in the air of Tianjin from 2019 to 2021 was 81.14 μg/m3, which was higher than the national standard. The results of lung function testing showed that there was no statistically significant difference in lung function measurement indicators such as forced vital capacity (FVC), forced expiratory volume at 1 second (FEV1), peak expiratory flow (PEF), 75% forced expiratory volume in 75 (FEF75), and 25% forced expiratory volume in 25 (FEF25) among primary school students in different regions of Tianjin (F=1.23, 0.87, 2.34, 1.56, 0.98, P>0.05). But the GLM analysis results showed that all components of PM2.5 in the air had adverse effects on the lung function indicators of primary school students. When the concentrations of fluorene (FLU) and pyrene (PYR) increased by 10 ng/m3, the FVC of primary school students decreased by 166.44 and 61.94 L respectively. The WQS regression model analysis results showed that the mixed exposure of PM2.5 components particularly significant damaging effects on lung function indicators in primary school students, especially the FLU and PYR components in polycyclic aromatic hydrocarbons, as well as the heavy metal lead.
Conclusions:Both single and mixed exposure to various PM2.5 components in the air have adverse effects on the lung function of primary school students. Among them, the influences of FLU and PYR in polycyclic aromatic hydrocarbons, as well as heavy metal Pb, are particularly significant.Potential pollution sources should be controlled to protect the respiratory health of primary school students by comprehensive prevention and control measures.
