Nadhira DahariKhalida MudaMohd Talib LatifDoreena DominickNorelyza HusseinMd Firoz Khan2024-05-102024-05-102022Dahari, N., Muda, K., Latif, M. T., Dominick, D., Hussein, N., & Khan, M. F. (2022). Seasonal variations of particle number concentration and its relationship with PM2. 5 mass concentration in industrial-residential airshed. Environmental Geochemistry and Health, 44(10), 3377-3393.https://repoemc.ukm.my/handle/123456789/504The smaller particles that dominate the particle number concentration (PNC) in the ambient air only contribute to a small percentage of particulate matter (PM) mass concentration although present in high particle number concentration. These small particles may be neglected upon assessing the health impacts of the PM. Hence, the knowledge on the particle number concentration size distribution deserves greater attention than the particulate mass concentration. This study investigates the measurement of the particle mass concentrations (PM2.5) and PNC of 0.27 μm < Dp < 4.50 μm during the southwest (SW), inter-monsoon (IM) and northeast (NE) monsoons in the industrial-residential airshed of Skudai, Johor Bahru, Malaysia.enParticle number concentrationPM 2.5Seasonal variationIndustrial-residential airshedJournal