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Platinum levels in natural and urban soils from Rome and Latium (Italy): Significance for pollution by automobile catalytic converter

TitoloPlatinum levels in natural and urban soils from Rome and Latium (Italy): Significance for pollution by automobile catalytic converter
Tipo di pubblicazioneArticolo su Rivista peer-reviewed
Anno di Pubblicazione2002
AutoriCinti, D., Angelone Massimo, Masi U., and Cremisini C.
RivistaScience of the Total Environment
Volume293
Paginazione47-57
ISSN00489697
Parole chiaveAir Pollutants, Air pollution, article, Automobile catalytic converters, Automotive fuels, background level, car, Cities, Concentration (process), controlled study, Environmental monitoring, exhaust emission, exhaust gas, Italy, Lead, monitoring, nonhuman, Platinum, priority journal, Reference Values, Sampling, Soil Pollutants, Soil pollution, topsoil, traffic, urban area, Vehicle Emissions
Abstract

Platinum concentrations in topsoil samples collected in 1992 (48) and in 2001 (16) from the urban area of Rome have been determined by ICP-MS. Concentrations in 47 soil samples collected in 1992 from natural sites of Latium (an area around Rome) have been determined for a first assessment of natural background levels. The Pt concentrations in Rome urban soils collected in 1992 range from 0.8 to 6.3 ng/g (X̄=3.8±1.0) overlapping the concentration range of natural soils from Latium (X̄=3.1±2.1 ng/g). No significant correlation has generally been found between Pt contents in the 'natural' soils and related bedrock or major pedogenetic parameters. These results suggest that there is no evidence of Pt pollution in Rome urban soils at that time, because the massive use of the automobile catalytic converter has only just started. Higher (up to six times more) Pt concentrations, than those measured in the 1992 samples, have been measured, in some cases, in Rome urban soils collected in 2001, suggesting a possible start of Pt accumulation because of the large-scale use in the last decade of automobile catalytic converters. At the same time, a clear decrease of lead levels in Rome urban soils with respect to the levels measured in 1992 has been observed, paralleling the decreasing number of lead gasoline-fuelled cars. Here we present one of the first systematic studies for defining background levels of Pt in Italian natural soils, thus allowing for monitoring, in the future, should any possible Pt pollution caused by the use of automobile catalytic converter, especially in urban soils, occur. Copyright © 2002 Elsevier Science B.V.

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URLhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-0037014491&doi=10.1016%2fS0048-9697%2801%2901137-8&partnerID=40&md5=ce615add4a78c42fed813c0d4889b159
DOI10.1016/S0048-9697(01)01137-8
Citation KeyCinti200247