[Air pollution quality index [AQI] and density of PM1, PM2.5 and PM10 in the air of Qom]

ABSTRACT

Air pollution has broad social, economical, political and technical aspects. one of the major issues in this regard is taking measures to prevent its increase. Since suspended particles are among the standard pollutants, the present study was carried out with the aim of measuring the amounts of these particles. In the present study, the suspended particles [PM1, PM2.5 and PM10] were measured at two sites in Qom city. For each of them, 60 samples were selected with the Enviro Check during five consecutive months during summer [2 months] and fall. During sampling, PM10 in the period between October 22'th to November 22[nd] 2007 had the maximum amount with the mean of 117microg/m[3] and in the period between September 22'th to October 22[nd] 2007 it had the minimum amount with the mean of 83microg/m[3]. PM2.5 in the period between November 22[nd] to December 22[nd] 2007 with the mean of 33microg/m[3] had the maximum amount and in the period between July 22[nd] to October 22[nd] 2007 it had the minimum amount with the mean of 8microg/m[3]. Based on the findings of this study, the densities of suspended particles PM1, PM2.5 and PM10 were below the standard levels on most occasions. The amounts of AQI for them were normal and acceptable