http://www.cnr.it/ontology/cnr/individuo/prodotto/ID20038
Importance of Automobile Exhaust Catalyst Emissions for the Deposition of Platinum, Palladium, and Rhodium in the Northern Hemisphere. (Articolo in rivista)
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- Importance of Automobile Exhaust Catalyst Emissions for the Deposition of Platinum, Palladium, and Rhodium in the Northern Hemisphere. (Articolo in rivista) (literal)
- Anno
- 2005-01-01T00:00:00+01:00 (literal)
- Alternative label
Rauch S., Hemond H.F., Barbante C., Owari M., Morrison G.M., Peucker-Ehrenbrink B., Wass U.. (2005)
Importance of Automobile Exhaust Catalyst Emissions for the Deposition of Platinum, Palladium, and Rhodium in the Northern Hemisphere.
in Environmental science & technology
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- Rauch S., Hemond H.F., Barbante C., Owari M., Morrison G.M., Peucker-Ehrenbrink B., Wass U.. (literal)
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- Deposition rates estimated for the roadside environment,
the peat bog, and central Greenland were used to provide
a first estimate of PGE deposition in the northern
hemisphere. The results show that deposition of regionally
or long-range transported PGE accounts for a large
fraction of total PGE deposition, and PGE deposition in
the roadside environment represents less than 5% of the
total deposition. Transport at the regional and global scales
represents an important component in the environmental
cycle of emitted PGE and needs to be further studied to
fully assess the environmental fate of PGE from automobile exhaust catalysts. (literal)
- Note
- ISI Web of Science (WOS) (literal)
- Titolo
- Importance of Automobile Exhaust Catalyst Emissions for the Deposition of Platinum, Palladium, and Rhodium in the Northern Hemisphere. (literal)
- Abstract
- An estimated 500 million vehicles worldwide are equipped
with an exhaust catalyst that uses platinum group
elements (PGE) as the main active components and thus
contribute to global PGE emissions. Although PGE emitted
from automobile exhaust catalysts were first believed to
remain in the roadside environment, we propose here that
fine PGE-containing particles in automobile exhaust have
resulted in a widespread distribution of emitted PGE. Regional
and long-range transport of PGE from automobile exhaust
catalysts is supported by elevated PGE deposition in
both a peat bog located 250 m from traffic and in central
Greenland, respectively. Russian smelters were also
found to contribute to PGE contamination in central Greenland.
Deposition rates estimated for the roadside environment,
the peat bog, and central Greenland were used to provide
a first estimate of PGE deposition in the northern
hemisphere. The results show that deposition of regionally
or long-range transported PGE accounts for a large
fraction of total PGE deposition, and PGE deposition in
the roadside environment represents less than 5% of the
total deposition. Transport at the regional and global scales
represents an important component in the environmental
cycle of emitted PGE and needs to be further studied to
fully assess the environmental fate of PGE from automobile exhaust catalysts. (literal)
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