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Paper Information

Journal:   JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY   WINTER 2007 , Volume 8 , Number 4 (31); Page(s) 33 To 38.
 
Paper: 

DETERMINING TEHRAN'S AIR QUALITY IN 2004 USING AIR QUALITY INDEX (AQI)

 
 
Author(s):  SOBHAN ARDAKANI S., ESMAEILI SARI A., CHERAGHI MEHRDAD, GHASEMPOURI M., TAYEBI L.
 
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Abstract: 

Today, the numerous consequences of air pollution, especially those related to people's health such as respiratory, heart and nervous system diseases, have made the monitoring and control of air quality an unavoidable issue and the main concern in all societies.
In this study, due to the fact that Tehran>s air is much polluted, the city>s air quality index for 5 major air pollutants - 03, PM10, CO, SO2, and NO2 - in 2004 was calculated.
The Air Quality Index showed that 262 days in the year under study, air pollution had been more than the accepted standard level (i.e., AQI= 100). In 12 percent of the days, the air quality was rated as unhealthy and in 5 percent of the days as hazardous, with carbon monoxide as the cause of pollution in 83% of the cases. It should also be mentioned that the three months of August, September and October of 2004 were the most polluted with average indices of 190, 185, and 188 on the AQI scale.
Comparing the results of this study with the results of the studies done in the previous years, it can be concluded that Tehran>s air quality has not improved much and is still very dangerous for people, specially the sensitive groups.

 
Keyword(s): HEALTHY AIR, AIR QUALITY INDEX, POLLUTANT STANDARD INDEX, AIR POLLUTION INDEX
 
References: 
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