Construction of air quality health index in Jinhua City based on air pollutants and years of life lost
Objective To construct air quality health index (AQHI) in Jinhua City,Zhejiang Province based on the ex-posure-response relationship between air pollutants and years of life lost (YLL),and evaluate the health risk associated with air quality.Methods Air pollutants and meteorological data in Jindong District and Wucheng District of Jinhua City from 2014 to 2021 were collected through Jinhua Environmental Monitoring Center and Jinhua Meteorological Bu-reau.Non-accidental death data of residents during the same period was collected through Zhejiang Chronic Disease Monitoring Information Management System.The exposure-response relationship between major air pollutants and YLL was analyzed using a generalized additive model (GAM),and major pollutants were screened for calculating AQHI.The exposure-response relationship between AQHI and YLL was analyzed using GAM.Results The results of single-pollut-ant model analysis showed that the lagged effect of PM2.5 on YLL was the largest at lag of 1 day,and the effect of SO2 on YLL was the largest on the same day.The results of dual-pollutant model analysis showed that the impact of PM2.5 on YLL was statistically significant when other pollutants were included at a lag of 1 day,and the impact of SO2 on YLL was statistically significant when NO2 was included on the same day (all P<0.05).The average daily mass con-centration of O3 exceeded the standard by a relatively high rate of 42.27％ from 2014 to 2021.Based on the analysis re-sults of single-pollutant and two-pollutant models,excessive pollutant condition and relevant research findings,PM 2.5,SO2,NO2 and O3 were selected as the major pollutants for calculating the AQHI.The median AQHI value of 1.40 (interquar-tile range,1.13) from 2014 to 2021.According to the AQHI classification standard,94.55％ was the time was at low risk,and 4.93％ of the time was at medium risk.With an increase in AQHI by one interquartile range,the YLL among the entire population,males,females,<65-year-old and ≥65-year-old populations would increase 6.21,3.26,6.46,4.24 and 10.57 person-years,respectively.Conclusions The air quality health risk in Jinhua City was low at most of the time from 2014 to 2021.An increase in AQHI was associated with an increased risk of YLL among population.
air pollutionyears of life lostair quality health indexgeneralized additive model
万方数据
维普
