Abstract:
Objectives To explore the relationship between fine particle matters (PM
2.5)in the ambient air and the mortality of respiratory diseases in Fengtai district of Beijing in 2013.
Methods Describing the pollution of PM
2.5, the mortality of respiratory diseases and meteorological factors, and analyzing their relevance in Fengtai district of Beijing in 2013. Establishing a distributed lag nonlinear model (DNLM)to explore the effect of PM
2.5 on the mortality of respiratory diseases by controlling long-term trends and meteorological factors, and to analyze the association between PM
2.5 pollution and the mortality of respiratory diseases.
Results The average concentration of PM
2.5 was 100.92 μg/m
3, and there were 764 people died of respiratory diseases in Fengtai district of Beijing in 2013. The concentration of PM
2.5 was positively correlated with daily average relative humidity, the total mortality of respiratory diseases and the mortality of respiratory diseases in the female (
P<0.05). There was no correlation between the concentration of PM
2.5 with daily average temperature, daily average air pressure and the mortality of respiratory diseases in the male. The rising of PM
2.5 concentration on each 10 μg/m
3, the relative risk (RR)for the death from respiratory diseases was 1.0252 (95%
CI: 1.0113-1.0393)in the same day.
Conclusions The average concentration of PM
2.5 in Fengtai district of Beijing in 2013 was 100.92 μg/m
3, which was 34.56% higher than that of the second level of national standard limits. The number of death from respiratory diseases was increased with the increase of PM
2.5 concentration in Fengtai district of Beijing in 2013.