Estimation of Diseases and Mortality Atributed to Atmospheric NO2 and SO2 Using AirQ Model in Hamadan City, Iran

NO2 and SO2 as gaseous air pollutants are involved in many global air
accidents, and are respiratory tract irritants that can cause numerous health effects in
humans. Terefore, due to the necessity of studies in this feld and the absence of any
similar study in the city of Hamadan, the aim of this study was quantifcation of health
effects atributed to NO2 and SO2 in Hamadan city of Iran during years 2014 and 2015.
Methods: Tis was a cross-sectional study. Primarily, required criteria pollutants and
meteorological data were obtained from the environmental protection agency and
meteorological agency of Hamadan city, respectively. Te obtained data were validated
using the World Health Organization )WHO( criteria. Required statistical indices were
calculated and according to baseline incidence, relative risk and exposed populations, the
different effects of pollutants were assessed.
Results: According to the results, the average annual concentration of NO2 and SO2
was 1.7 and 1.6 times more than the standard, respectively. With central relative risk, the
estimated atributed portion for total mortality atributed to NO2 and SO2 was 1.74 and
0.92, respectively, which is equal to death of 51.9 and 27.3 individuals during years 2014
and 2015, respectively.
Conclusions: As a result, it should be stated that most of the adverse health effects
atributed to SO2 and NO2 were observed in concentration ranges from 20 to 49 and
40 to 89 micrograms per cubic meter, respectively. Tis indicated that the concentration
distribution of NO2 was wider than SO2. It can also be concluded that investigated
pollutants )NO2 and SO2( had signifcant adverse effects on the residents of Hamadan
city and before further increase in the effects, preventive measures should be taken by
relevant authorities