Monsoon Season Spatial Distribution of Particulates Concentration in the Road Intersection Area of Different Land Use in Major City in South Asian Countries

Abstract

Air pollution has become one of the most significant issues in the metropolitan area of Dhaka in recent years. There are various sources of air pollution in Dhaka city, among them, unfit vehicles and industries are notable with under construction work done by Dhaka city Corporation. With regard to various land uses in the Dhaka metropolitan region, this study intends for monitoring the Particulate Matters (PM<sub>2•5</sub> and PM<sub>10</sub>) concentrations and its relationship to the various types of land use in the region. This investigation was carried out in 82 different places throughout the Dhaka metropolitan area by using instrument named Aeroqual S-500. Study found that the average concentrations of PM<sub>2•5</sub> and PM<sub>10</sub> in these locations were 31.10 and 72.03 g/m<sup>3</sup>, respectively. The average concentration of PM<sub>2•5</sub> and PM<sub>10 </sub>across all land uses was found to be 1.4148 and 1.7082 times higher than the WHO standard threshold, respectively. It is estimated that the average PM<sub>2.5</sub>/PM<sub>10</sub> was 46.32%. It also revealed that the concentrations of the parameters do not change significantly with land use as the p values are greater than 0.05. Average concentration of PM<sub>2•5</sub> & PM<sub>10 </sub>follows as mixed area > residential area > commercial area > silent area > industrial area.