Gaseous Ammonia From Traffic Emissions In The Urban Area Of Rome
Author(s)
C. Perrino. M. Catrambone & A. Di Menno Di Bucchianico
Abstract
Gaseous ammonia from traffic emissions in the
urban area of Rome
C. Perrino, M. Catrambone & A. Di Menno Di Bucchianico
C.N.R. Institute of Atmospheric Pollution, Italy.
Abstract
Although the main source of atmospheric ammonia is agriculture (animal wastes
and fertilizers), in the last few years an increase of NH3 emissions due to the
introduction of vehicles equipped with catalytic converters was reported in the
literature. Some field studies carried out in tunnels showed a ten-fold increase of
ammonia concentration from the entrance to the exit of the tunnel, suggestmg that
exhausts may have a considerable influence on urban ammonia levels. To test this
hypothesis, we have conducted many series of measurements of ammonia
concentration in the urban area of Rome (Italy) and in a rural area 30 km away,
during the period 2001 - 2003. The measurements were carried out by means of
annular denuders, with an integration time of half an hour, and by passive
devices.
The results of our studies show th
Keywords
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