Origin of atmospheric lead in Johannesburg, South Africa

The origin of lead in the atmosphere of Johannesburg, South Africa was investigated on the basis of elemental and lead isotopic analyses of coals, mine dumps, gasoline, and about 30 epiphytic lichen samples. Lead predominantly comes from automotive exhausts in urban and suburban areas, as leaded ant...

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Veröffentlicht in:Atmospheric environment 2006-11, Vol.40 (34), p.6554-6566
Hauptverfasser: Monna, F., Poujol, M., Losno, R., Dominik, J., Annegarn, H., Coetzee, H.
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container_end_page 6566
container_issue 34
container_start_page 6554
container_title Atmospheric environment
container_volume 40
creator Monna, F.
Poujol, M.
Losno, R.
Dominik, J.
Annegarn, H.
Coetzee, H.
description The origin of lead in the atmosphere of Johannesburg, South Africa was investigated on the basis of elemental and lead isotopic analyses of coals, mine dumps, gasoline, and about 30 epiphytic lichen samples. Lead predominantly comes from automotive exhausts in urban and suburban areas, as leaded antiknock additives were still in use in South Africa at the time of the study. Although dust emissions from the numerous mine-tailing dumps were expected to contribute significantly to the heavy metal budget, the southern townships that are surrounded by the dumps (such as Soweto and other historically Black residential areas) do not appear to be more than partially influenced by them, and this influence seems to be geographically limited. Domestic coal burning, suspected to account for the total lead content in the air, is also recognised, but only acts as a minor source of lead, even in townships.
doi_str_mv 10.1016/j.atmosenv.2006.05.064
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source ScienceDirect Journals (5 years ago - present)
subjects Applied sciences
Atmospheric pollution
Continental interfaces, environment
Exact sciences and technology
Lead isotope
Lichen
Mine dump
Mixing model
Pollutants physicochemistry study: properties, effects, reactions, transport and distribution
Pollution
Sciences of the Universe
title Origin of atmospheric lead in Johannesburg, South Africa
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