PIXE characterization of PM^sub 10^ and PM^sub 2.5^ particulates sizes collected in Ikoyi Lagos, Nigeria

Ambient concentrations of PM10 (x ≤ 10 μm) and PM2.5 (x ≤ 2.5 μm) particulate fractions collected from Ikoyi Lagos, Nigeria, as well as their elemental compositions are presented in this study. Both size-segregated fractions were collected using a double staged 'Gent' stack filter unit sam...

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Published inToxicological and environmental chemistry Vol. 94; no. 5; p. 884
Main Authors Ezeh, Godwin C, Obioh, Imoh B, Asubiojo, Olabode I, Abiye, Olawale E
Format Journal Article
LanguageEnglish
Published Abingdon Taylor & Francis Ltd 30.05.2012
Subjects
Airborne particulates
Analytical chemistry
Chemical filters
Matrix
Trace elements
X-rays
Lagos Nigeria
Nigeria
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Summary:Ambient concentrations of PM10 (x ≤ 10 μm) and PM2.5 (x ≤ 2.5 μm) particulate fractions collected from Ikoyi Lagos, Nigeria, as well as their elemental compositions are presented in this study. Both size-segregated fractions were collected using a double staged 'Gent' stack filter unit sampler. Elemental characterizations of dust laden filters were carried out using proton-induced X-ray emission (PIXE) technique. Twenty-two elements (Si, S, Cl, K, Ca, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Pb, Br, Rb, Sr, Zr, Ag, Cd, and Ta) were detected as well as their concentrations and correlations were determined for both particulate size fractions. Their correlation matrix result indicates that some of the trace elements detected could have common source origins or similar chemical properties. The results were similar to the levels observed in moderately polluted urban areas and there is need for source identification and apportionment using receptor models in future studies. [PUBLICATION ABSTRACT]
ISSN:0277-2248