Investigation of the source and health effects of atmospheric aerosols in Tehran city

Document Type : Original Article


1 Department of Environmental, Faculty of Natural Resources and Environment, Malayer University, Malayer, Iran

2 School of nuclear fuel cycle, Nuclear Science and Technology Research Institute, Tehran, Iran


Despite past improvements in air quality, very large parts of the population in urban areas breathe air that does not meet European standards let alone the health-based World Health Organisation Air Quality Guidelines. Over the last 10 years, there has been a substantial increase in findings that particulate matter (PM) air pollution is not only exerting a greater impact on established health end­points, but is also associated with a broader number of disease outcomes. 
Materials and methods:
Recently, relatively good research has been done on the understanding of the nature of particles and their role in creating a problem in humans. A comprehensive study of this research and the analysis of their results, along with the comparison of the results of the research on health impact assessment were evaluated in Tehran. 
Results and discussion:
Data strongly suggest that effects have no threshold within the studied range of ambient concentrations, can occur at levels close to PM2.5 background concentrations and that they follow a mostly linear concentration-response function. Hav­ing firmly established this significant public health problem, there has been an enormous effort to identify what it is in ambient PM that affects health and to understand the underlying biological basis of toxicity by identifying mechanistic pathways-information that in tum will inform policy makers how best to legislate for cleaner air. Another intervention in moving towards a healthier environment depends upon the achieving the right public attitude and behavior by the use of optimal air pollution moni­toring, forecasting and reporting that exploits increas­ingly sophisticated information systems. 
Improving air quality is a considerable but not an intractable challenge. Translating the correct scientific evidence into bold, realistic and effective policies undisputedly has the potential to reduce air pollution so that it no longer poses a damaging and costly toll on public health. 


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