Objective To investigate the impact of fine particulate matter (PM2.5) concentration on the risk of death from circulatory system diseases among residents in Ma'anshan City. Methods Data of air pollutants,meteorological and residential cause of death of Ma'anshan residents from 2018 to 2020 were collected.The generalized additive regression model was employed to evaluate the risk and lagged effects of PM2.5 concentration on mortality risk of circulatory system diseases among residents in Ma'anshan City. Results From 2018 to 2020,there were 6 334 people died of circulatory system diseases with an average of (5.78±2.71) deaths every day in Ma'anshan City.From 2018 to 2020,the median daily average concentration of atmospheric PM2.5 was 34.00 (23.00,44.00)μg/m3,the median daily average temperature was 17.95 (8.70,24.60)℃,and the median relative humidity was 75.00 (64.00,87.00)%.In the single-pollutant model,the strongest correlation between PM2.5 concentration and circulatory system disease mortality was lag1 and lag05,respectively.The excess risk (ER) was 1.21% (95%CI:0.21%~2.22%) and 2.03％ (95％CI:0.50％~3.59％),respectively.In the double-pollutant model,when CO and O3-8h were included separately,the risk of circulatory system disease deaths caused by increased PM2.5 concentration was increased,and it was decreased when PM10,SO2,NO2 were included separately.While taking PM10,SO2,NO2,CO and O3-8h in the multi pollution model at the same time,the effect value of the risk of circulatory system disease deaths decreased but was not statistically significant in Ma'anshan City (P>0.05). Conclusion The impact of PM2.5 concentration in the atmosphere of Ma'anshan City on the death of circulatory system diseases has a time lag,which may lead to an increased risk of death from circulatory system diseases.
Key words
Air pollution /
PM2.5 /
Circulatory system diseases /
Death risk
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