Abstract
Spatial analysis of the distribution of particulate matter PM10, PM2.5, PM1.0, and hydrogen sulfide (H2S) gas pollution was performed in the area around a university library building. The reasons for the subject matter were reports related to the perceptible odor characteristic of hydrogen sulfide and a general poor assessment of air quality by employees and students. Due to the area of analysis, it was decided to perform measurements at two heights, 10 m and 20 m above ground level, using measuring equipment attached to a DJI Matrice 600 unmanned aerial vehicle (UAV). The aim of the measurements was air quality assessment and investigate the convergence of the theory of air flow around the building with the spatial distribution of air pollutants. Considerable differences of up to 63% were observed in the concentrations of pollutants measured around the building, especially between opposite sides, depending on the direction of the wind. To explain these differences, the theory of aerodynamics was applied to visualize the probable airflow in the direction of the wind. A strong convergence was observed between the aerodynamic model and the spatial distribution of pollutants. This was evidenced by the high concentrations of dust in the areas of strong turbulence at the edges of the building and on the leeward side. The accumulation of pollutants was also clearly noticeable in these locations. A high concentration of H2S was recorded around the library building on the side of the car park. On the other hand, the air turbulence around the building dispersed the gas pollution, causing the concentration of H2S to drop on the leeward side. It was confirmed that in some analyzed areas the permissible concentration of H2S was exceeded.
Highlights
IntroductionAir quality is one of the key environmental factors influencing the health of living organisms, including humans
We studied the area around the library building on the B campus of Lodz University of Technology
The use of an unmanned aircraft with measuring equipment attached to it allowed The use of an unmanned aircraft with measuring equipment attached to it allowed for quick, accurate, and repeatable analysis of a large space around the library building at for quick, accurate, and repeatable analysis of a large space around the library building at different heights relative to the terrain
Summary
Air quality is one of the key environmental factors influencing the health of living organisms, including humans. Air pollution of anthropogenic origin, in particular, is very harmful to the environment [1]. High concentrations of pollutants generated by human activity occur especially in industrial areas and cities, as well as in other spaces such as agricultural or recreational areas. These pollutants directly and indirectly affect the air quality around the source of the pollution, and in the surrounding area [2,3,4,5,6,7]
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