Norrimi Rosaida AwangNor Azam RamliSyabiha ShithNoor Faizah Fitri Md YusofNazatul Syadia ZainordinNurulilyana SansuddinNurul Adyani Ghazali2024-05-102024-05-102018Awang, N. R., Ramli, N. A., Shith, S., Yusof, N. F. F. M., Zainordin, N. S., Sansuddin, N., & Ghazali, N. A. (2018). Time effects of high particulate events on the critical conversion point of ground-level ozone. Atmospheric environment, 187, 328-334.https://repoemc.ukm.my/handle/123456789/585Particulate matter (PM), especially those with an aerodynamic particle size of less than 10 μm (PM10), is typically emitted from transboundary forest fires. A large-scale forest fire may contribute to a haze condition known as a high particulate event (HPE), which has affected Southeast Asia, particularly Peninsular Malaysia, for a long time. Such event can alter the photochemical reactions of secondary pollutants. This work investigates the influence of PM on ground-level ozone (O3) formation during HPE. Five continuous air quality monitoring stations from different site categories (i.e., industrial, urban and background) located across Peninsular Malaysia were selected in this study during the HPEs in 2013 and 2014.Ozone productionAnthropogenic sourcesOzone precursorPhotochemical reactionParticulate matterJournal