Journal of Atmospheric Pollution
ISSN (Print): 2381-2982 ISSN (Online): 2381-2990 Website: http://www.sciepub.com/journal/jap Editor-in-chief: Ki-Hyun Kim
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Journal of Atmospheric Pollution. 2016, 4(1), 15-22
DOI: 10.12691/jap-4-1-2
Open AccessArticle

Trace Metals in Total Atmospheric Depositions (TAD) of a Nigerian Island

C.A. Onwudiegwu1, G.C. Ezeh2, and I.B. Obioh2

1African Institute for Science Policy and Innovations, Obafemi Awolowo University, Ile-Ife Nigeria

2Atmospheric Research and Information Analysis Laboratory (ARIAL), Centre for Energy Research and Development (CERD), Obafemi Awolowo University Ile-Ife

Pub. Date: July 22, 2016

Cite this paper:
C.A. Onwudiegwu, G.C. Ezeh and I.B. Obioh. Trace Metals in Total Atmospheric Depositions (TAD) of a Nigerian Island. Journal of Atmospheric Pollution. 2016; 4(1):15-22. doi: 10.12691/jap-4-1-2

Abstract

The paucity of data on air quality studies in Nigeria prompted us to commence the monitoring of total atmospheric deposition (TAD) in Lagos Island, Nigeria. TAD samples were collected every 30 days for a period of two years using a local assembled gauge fashioned after the Australian model gauge. Elemental characterization was carried out by Particle Induced X-ray Emission (PIXE) technique via an in-vacuum ion beam set-up. The TAD rates ranged from 1 to 62 g-1m3 month-1. Twenty-eight elements (Na, Mg, Al, Si, P, S, Cl, K, Ca, Ti, V, Cr, Mn, Fe, Ni, Cu, Ga, As, Zn, Se, Br, Rb, Y, Nb, Mo, Sr, Zr and Pb) were detected in both fractions and their concentrations were assessed. Enrichment factors (EF) and pollution indices (PLI) were calculated and results revealed that most elements were anthropogenic with concentrations exceeding the World Health Organization guideline standards.

Keywords:
atmospheric anthropogenic air quality PIXE pollution ion beam

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