Assessment of Students’ Exposure to Fine Particulate Matter at the University Campus

Major health effects linked with air pollution are from long-term exposure, but the complicity of air pollution is that it varies with locations, time, and sources. In this study, the authors assessed students’ exposure to fine Particulate Matter ( P M 2.5 ) at the University of Rwanda’s campus. Data were collected in the most accessible areas using low-cost sensors known as Air Visuals. To estimate the degree of students’ exposure to P M 2.5 , the study considered the students’ number, indoor P*M_{2S} concentrations, and time spent in the selected areas. In classes, the highest indoor and outdoor concentrations were found on Muhabura’s second floor with mean values of 20.7 plus/minus 2.42 * mu*g / (m ^ 3) and 27.83 plus/minus 3.4 * mu*g / (m ^ 3) respectively. P*M_{2}*S data in hostels were collected at night, with the highest concentrations observed on second floor 0.96 + 2.56mu*g / (m ^ 3) and 80.73 plus/minus 3.77 * mu*g / (m ^ 3) for indo