Seasonal Variation, Pollution Indices and Trajectory Modeling of Bio-monitored Airborne Particulate Around Two Smelting Factories in Osun State, Nigeria

Autor: Felix S. Olise, Mudasiru A. Olajire, Lasun T. Ogundele, O. K. Owoade
Rok vydání: 2020
Předmět:
Zdroj: Aerosol Science and Engineering. 4:260-270
ISSN: 2510-3768
2510-375X
Popis: This study determined the seasonal variation of the elemental contents of airborne particulates in the exposed lichen and moss samples, estimated the pollution status and established the air mass trajectories of the airborne particulates around two smelting factories in Osun State, Nigeria. The exposed lichen and moss samples were analyzed for elemental contents, employing X-ray fluorescence (XRF) technique. The pollution status was estimated using various indices: pollution load factor (PLF), degree of pollution load factor (DPLF), pollution load index (PLI) and relative accumulation factor, and the trajectories of pollutants were modeled using hybrid single-particle lagrangian integrated trajectory (HYSPLIT 4.0). The average concentrations of Ca and Fe were above 1000 μgg−1 showing their affinity and natural abundance in moss and lichen bio-monitors. Elements such as V, Cr, Co Ni Sr and Rb were below 100 μgg−1 in both seasons for the two sites. The elemental concentrations of moss and lichen samples, for most of the elements, were similar in trend for both sites due to similar production processes. The PLF values of Sc, Cr and Cu, Zn, Ni and Mn and Fe, Rb and Se were > 6, 3 ≤ PLF
Databáze: OpenAIRE
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