Brazilian PGE research data survey on urban and roadside soils
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Platinum metals in the environment, environmental science and engineering
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Resumo
Since the 1990s, investigations on the increase of platinum (Pt), palladium (Pd), and rhodium (Rh) levels in urban environments of big cities all over the
world due to catalytic converters emissions have increased enormously, mainly in
developed countries. Nevertheless, relatively few studies were performed in
developing countries, such as Brazil. The state of São Paulo is the most populous and
richest Brazilian state, and the city of São Paulo is the largest city in South America,
and the 7th largest metropolitan region of the world. In this article, a discussion
about the results obtained for the platinum group elements (PGE) Pt, Pd and Rh
concentrations in soils adjacent to a major road in São Paulo state and in soils
adjacent to seven main high density traffic avenues in the metropolitan region of São
Paulo City are presented. Pt, Pd and Rh were found in much higher concentrations
than PGE geogenic background, showing a catalytic converter origin. The platinum
group elements levels obtained in São Paulo urban soils were much higher than those
obtained for the roadside soils. Pd levels about seven times higher than the results
obtained for the roadside soils were observed. The highest concentrations obtained
for Pt (208 ng g−1
) and Rh (45 ng g−1
) were of about 12 and 5 times higher than the
results obtained for the roadside soils. The results indicate that the PGE concentrations in São Paulo soils are directly influenced by traffic conditions. The concentrations of traffic-related elements such as Pb, Zn and Cu were also determined in
the studied soils. Factorial analysis and cluster analysis discriminated the traffic
related metals from PGE in the urban soils. However, in the roadside soils PGE were
well correlated with Pb, Cu and Zn. The results obtained at present for PGE levels in
São Paulo soils demonstrate the importance of continuous monitoring, since the
rapid increase of the vehicular fleet in Brazil should also increase PGE emissions.
Como referenciar
FIGUEIREDO, ANA M.G.; RIBEIRO, ANDREZA P. Brazilian PGE research data survey on urban and roadside soils. In: ZEREINI, F. (ed.); WISEMAN, C.L.S. (ed.). Platinum metals in the environment, environmental science and engineering. Berlin: Springer Verlag Berlin Heidelberg, 2015. p. 131-144. DOI: 10.1007/978-3-662-44559-4_9. Disponível em: http://repositorio.ipen.br/handle/123456789/26441. 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.