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Manganese levels and chemical fractionation in street dust in South Africa

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dc.contributor.author Okonkwo J.O. en
dc.contributor.author Moja S.J. en
dc.contributor.author Forbes P. en
dc.date.accessioned 2012-11-01T16:31:25Z
dc.date.available 2012-11-01T16:31:25Z
dc.date.issued 2009 en
dc.identifier.citation International Journal of Environment and Pollution en
dc.identifier.citation 36 en
dc.identifier.citation 4 en
dc.identifier.issn 9574352 en
dc.identifier.other 10.1504/IJEP.2009.023662 en
dc.identifier.uri http://hdl.handle.net/10500/7164
dc.description.abstract Mn in street dust and soil from selected roads was studied to assess the contribution of combustion of vehicular methylcyclopentadienyl manganese tricarbonyl (MMT) to Mn levels and distribution in Pretoria, South Africa. Total Mn concentrations ranged from (329.1-863.9 μg g-1) for dust and (215.8-450.6 μg g-1) for soil. These values were significantly higher than the mean value (278.9 μg g-1) found on soil from a rural environment in Pretoria. The lowest value for the dust sample (329.1 μg g-1) was close to the mean background level of 330 μg g -1 for Mn in soil. Mn distribution in the samples was most in the residual fraction (178.18-487.50 μg g-1) and (140.76-293.40 μg g-1) for dust and soil respectively. Mn in the other fractions were 56.45-202.60 μg g-1 oxides, 90.71-45.34 μg g-1 organic, 45.36-12.65 μg g-1 carbonates and 1.98-6.72 μg g -1 exchangeable for dust and 32.54-167.31 μg g-1 oxides, 34.23-70.45 μg g-1 organic, 10.98-30.45 μg g -1 carbonate and 1.0-4.87 μg g-1 exchangeable for soil. Major source of Mn determined was mainly from the combustion of vehicular MMT. Copyright © 2009 Inderscience Enterprises Ltd. en
dc.language.iso en en
dc.subject Chemical fractionation; Manganese level; Roadside soil; South Africa; Street dusts Background levels; Chemical fractionation; Dust samples; Mean values; Methylcyclopentadienyl manganese tricarbonyl; Mn concentrations; Residual fractions; Roadside soil; Rural environments; South Africa; Street dusts; Combustion; Dust; Manganese compounds; Roadsides; Soils; Thermochemistry; Manganese; atmospheric chemistry; background level; combustion; concentration (composition); dust; fractionation; manganese; pollutant source; soil chemistry; traffic emission; Africa; Gauteng; Pretoria; South Africa; Southern Africa; Sub-Saharan Africa en
dc.title Manganese levels and chemical fractionation in street dust in South Africa en
dc.type Article en


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