Publication Date:
2020-02-24
Description:
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 ngyg ( s3.8"1.0) overlapping the concentration range ¯X
of natural soils from Latium ( s3.1"2.1 ngyg).No significant correlation has generally been found between Pt ¯X
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.Her e 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.
Description:
Published
Description:
47-57
Description:
4.4. Scenari e mitigazione del rischio ambientale
Description:
JCR Journal
Description:
restricted
Keywords:
Automobile catalytic converters; ICP–MS; Platinum; Natural soils; Urban soils; Rome; Latium
;
05. General::05.08. Risk::05.08.01. Environmental risk
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
