Spatial Distribution of Air Quality in Lakshmipur District Town, Bangladesh: A Winter Time Observation

Abstract ―​

The district town is experiencing an upward trend in the amount of air pollution. The focus of this research is to monitor the concentration of particulate matter (PM₁, PM₂.₅ and PM₁₀) in Lakshmipur district town based on its different land uses. This research has been carried out with the assistance of portable Air Quality Monitors in sixty distinct locations throughout the Lakshmipur district town. It was observed that, on average, sixty different places in the town of Lakshmipur district had concentrations of PM₁, PM₂.₅ and PM₁₀ that were 91, 149, and 193 µg/m3 respectively. The level of Bangladesh’s National Ambient Air Quality Standards (BNAAQS) level has been determined to be exceeded by an average concentration of PM₂.₅ and PM₁₀ that was 2.29 and 1.29 times higher, respectively. The three most polluted places were Temuhoni CNG station (mixed area), Mia Bari Abasik (road intersection area), and Temuhoni mor (road intersection area), while the three least polluted were Khoya Sagar Degirpar, Banchanagar Beribad, and Eidgah Dalal Bazar three least-contaminated sites are villages. Also estimates, the ratio of PM₂.₅/PM₁₀ was 77.11%, while the ratio of PM₂.₅/PM₁₀ was 60.84%. Based on the findings of this study, the different types of land uses that were investigated have been ranked in descending order according to the average concentration of Particulate Matter (PM). The order is as follows: commercial area > residential area > road intersection area > industrial area > mixed area > sensitive area > village area.