10th International Aerosol Conference September 2 - September 7, 2018 America's Center Convention Complex St. Louis, Missouri, USA
Abstract View
Atmosphere Bioaerosols in Different Micro- Environments of Megacity of Lagos, Nigeria: Relationship between Ambient Concentrations, Volatile Organic Compounds and Weather Parameters
EMMANUEL OLUMAYEDE, Chukwebe Ojiodu, Federal University Oye - Ekiti
Abstract Number: 1719 Working Group: Bioaerosols
Abstract This objective of this study is to investigate the relationship between outdoor concentrations of bioaerosols, Volatile Organic Compounds and meteorological parameters in different microenvironments of Mega city, Lagos Southwest Nigeria, so as to ascertain the influence of these factors on bioaerosol levels. Airborne bacterial, volatile organic compounds (VOCs) and weather parameters were continuously monitored for the period of one year at two weeks intervals. Ambient aerosol samples were collected using a low volume handy sampler operated at flow rate of 2 L min–1. Meanwhile, the VOCs were collected by passive sampler (ORSA 5). Samples were collected at a height of ~1.5–2 m above the ground level for sampling to simulate exposure in the human breathing zone. The adsorbed VOCs were desorbed with carbon disulphide (CS2) and the solution analyzed using Gas Chromatography (GC) fitted with Flame Ionization Detector (FID). The results showed that 15 VOCs are quantified, with spatiotemporal pattern of high concentrations in winter. The total mass concentrations of identified organic aerosols range from 4.2 x 102cfu/m3 (Ilupeju) to 7.8 x102cfu/m3 (ojota). The levels of aerosols were correlated with levels of atmospheric volatile organic compounds and meteorological parameters using generalize linear model. The relationship was linear and significant, with R2 and P value being 0.978 and < 0.01.