Publication: Analysis of biochemical and morphological properties of fine particles (pm2.5) from high particulate event (hpe)
Loading...
Date
2023-02-01
Authors
Nur Amanina Binti Ramli
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
The current investigation focuses on the health and environmental impacts of elevated levels of fine particulate matter (PM2.5) in the air. Past research in Malaysia have only collected data on concentration and elemental composition and have not examined the morphological properties or biological components of PM2.5. Middle-aged and elderly people, particularly farmers, are most negatively impacted by straw burning on their health, so those who are more susceptible and are exposed to the smoke from straw burning on a more frequent basis are more likely to experience a decline in their health as a result of high particulate event from straw burning. Therefore, this study focuses on determining the compositions of trace elements and the morphological and biological properties of fine particles which the species of bacteria found in bioaerosol from high particulate event were discovered in this study. For morphological observation of fine particles, FESEM was used in this study. Two main categories of particles were found, which were natural particles and anthropogenic particles. The zinc element was found during the morphological observation and was assumed to come from the fertilizer used by the farmers. ICP-OES identifies the concentration of trace elements in the fine particle samples. A cultured method was used in this study by using nutrient agar. From this study, several bacteria were identified: Exiguobavterium indicum, Bacillus amyloliquefaciens, Desulfonema limicola str. Jadabusan, Exiguobacterium acetylicum, Lysinibacillus macrolides, and Bacillus proteolyticus. This study is important, especially for human health and further research on the biological composition of aerosols should be conducted to understand the effect of microorganisms on human health. Finally, PCA-MLR analysis revealed a road dust contributed up to 56%, biomass burning contributed 30%, minerals contributed 9%, and vehicle emissions contributed 5%. at S4 and S5 during high particulate occurrences. In comparison to non-high particulate occurrences, 50% contribution from mineral, a 26% contribution from vehicle emissions, a 17% contribution from road dust, and a 7% contribution from biomass burning. Hence from this study, local authorities will be able to monitor and predict high PM2.5 concentrations in high particulate event areas as well as local biomass burning regions, as well as provide consultation and raise PM2.5 awareness among local farmers.