Soil trace element status in an impouded vehicle scrapyard
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2016
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INTERNATIONAL CONFERENCE ON RADIOANALYTICAL AND NUCLEAR CHEMISTRY, 1st
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Resumo
The number of motor vehicles has increased by 118% over
the past decade in Brazil, which is transforming urban space
regarding mobility, parking and disposal capacity of these
vehicles. Impounded vehicle scrapyard overcrowding has
become a challenge in many Brazilian regions. This now is
considered a potential risk to soil quality, since vehicles are usually parked directly on the topsoil. The aim of this study
was to evaluate topsoil samples from a scrapyard of impounded
vehicles for Potentially Toxic Elements (PTEs),
like As, Co, Cr, Cu, Mo, Ni, Pb, and Zn, and rare-earths.
The area of study is in Ribeirão Pires, São Paulo, Brazil.
For this purpose, forty samples were analysed by Instrumental
Neutron Activation Analysis (INAA) and X-Ray
Fluorescence Spectrometry (XRF). The obtained values
were compared with literature data from Brazil and other
regions around the world, as so with recommended values
from environmental regulatory agencies. Some soil-geochemical
variables [including pH, organic matter (OM),
cation
exchange capacity (CEC)], and texture (e.g. clay,
silt and sand content) were used to interpret the behaviour
of the studied elements in the soil. The PTEs contents
ranged as follows: As (<3–15 mg kg–1), Co (2–30 mg kg–1),
Cr (7–183 mg kg–1), Cu (3–73 mg kg–1), Mo (<1–6 mg kg–1),
Ni (<3–38 mg kg–1), Pb (23–211 mg kg–1) and Zn (18–352
mg kg–1). In some hotspots, PTEs content exceeded continental
crust and also international recommended values.
The normalization of the rare-earth data by the Post-Archean
Average Australian Shale (PAAS) indicated high
anomalous values of Ce in some points that may suggest
an anthropogenic source, such as vehicle exhaust catalysts
(VEC). Total contents of PTEs rank in the following order:
Cr>Zn>Pb>Cu>Ni>As>Co>Mo. This is the first study in
scrapyards of impounded vehicles in Brazil. The results
may be used to monitor soil contamination in these sites
and for more effective environmental management.
Como referenciar
LANGE, CAMILA N.; FIGUEIREDO, ANA M.G.; ENZWEILER, JACINTA. Soil trace element status in an impouded vehicle scrapyard. In: INTERNATIONAL CONFERENCE ON RADIOANALYTICAL AND NUCLEAR CHEMISTRY, 1st, April 10-16, 2016, Budapest, Hungary. Abstract... p. 155-156. Disponível em: http://repositorio.ipen.br/handle/123456789/27536. Acesso em: 30 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.