Population Health Risk Assessment Of Atmospheric SO₂,PM10and NO_x Pollutants In Urumqi

Objective:By using the method of Health risk assessment to analysis on the concentration of the main atmospheric pollutants (SO2, PM10and NOx) and mortality rate of respiratory diseases, lung cancer mortality in recent10years in Urumqi city (hereinafter referred to as the Urumqi), quantitative evaluation the relationship of chronic health effects of residents exposed to SO2pollutants, reveals the main pollutants in the atmosphere SO2and potential hazards (respiratory system disease mortality, lung cancer mortality). Methods:According to the monitoring data of atmospheric SO2, PM10and NOx (major is NO2) in Urumqi City from the year2001to2010to calculated the daily average concentration of SO2, PM10and NO2and daily exposure dose exposure of SO2, PM10and NO2of the crowd contact, the SO2, PM10and NO2concentration in mean and mortality of respiratory diseases, lung cancer mortality and total mortality trends over time; analyzed with spearman rank correlation by statistical software SPSS17.0, calculation the health risk caused by the exposure of SO2, PM10and NO2on population in Urumqi city according to the non carcinogenic pollutants health risk assessment formula. evaluated synthetically and quantificationally the health hazard of SO2, PM10and NO2pollution on population by the formula of Air pollution caused excess deaths. Result:1.from2001to2010SO2year daily average concentration, non heating period, heating period concentration showed a downward trend, the average concentration of heating period decline trend along with the time difference was statistically significant (P<0.05); PM10daily average concentration, non heating period, heating period concentration decreased but the trend is not obvious; NO2throughout the year, non heating period, heating period, the average concentration of the rise and changes with the time differences were statistically significant (P<0.05);2.from2005to2010Urumqi SO2, concentration of PM10and the average value of NO2distribution is a distribution of U;3.from2001to 2010in Urumqi city group of respiratory system disease mortality has decreased, the difference was statistically significant changes have decreased with time of lung cancer mortality (P<0.05), a downward trend in total mortality;4.Spearman rank correlation analysis of Urumqi urban population mortality of respiratory diseases and atmospheric SO2was positively related to daily exposure dose, total mortality and atmospheric SO2in average daily exposure dose;5.from2001to2010in Urumqi City, caused by SO2PM10personal lifelong health hazard risk R are higher than the international generally believe that the risk level of acceptable range (1×10-6), NO2induced the personal lifelong health hazard risk R were lower than the international generally believe that the harm to the acceptable level of1×10-6;6.count out of the city of Urumqi in2010due to SO2exposure and PM10caused by super death toll calculation. Conclusion:In recent years, Urumqi City air quality gradually improved, the concentration of both SO2and PM10decreased, but the concentration of NO2has a significant upward trend; mortality of respiratory diseases, lung cancer mortality rate showed a downward trend; risk factors of population health still exist, and the pollutant concentration and the crowd with a correlation between health, SO2, induced by PM10health risk in ten years exceeded acceptable health risk and can cause excess deaths. Therefore, further enhance the comprehensive management of the environment, the adjustment and optimization of energy structure in the city, control of pollutant emissions, improve air quality, reduce the mortality rate of respiratory diseases, lung cancer mortality and related mortality, protection and health.