|
Title:
|
|
Instrument development and its application in studies of ammonia research and monitoring
|
|
|
|
Author(s):
|
|
|
|
|
|
Published by:
|
Publication date:
|
|
ECN
|
1-10-1999
|
|
|
|
ECN report number:
|
Document type:
|
|
ECN-RX--99-034
|
Article (scientific)
|
|
|
|
Number of pages:
|
|
|
20
|
|
Published in: Presented at the Nitrogen Workshop, Raleigh, North Carolina, 6-9 June 1999. - Submitted to Atmospheric Environment (), , , Vol., p.-.
Abstract:
During recent years it has become clear that ammonia is an important gasin relation to different environmental issues, such as acidification,
eutrophication, human health and climate change (through particle formation).
Therefore, there is a growing need to develop and apply instrumentation
suitable for research into emission, dispersion, conversion and deposition of
ammonia and ammonium. Recently, several instruments were developed suitable
for measuring concentrations in ambient conditions even at very low levels,
such as ammonia sensors suitable for monitoring and research, deposition
measuring systems and aerosol samplers for on-line measurement of aerosol
composition. These instruments have been tested and applied in a number of
field studies. These studies include dry deposition measurements, ammonium
nitrate studies in relation to the (in)direct aerosol effect, emission
studies and policy evaluation with concentration and deposition monitoring
data. The policy evaluation study showed that the measures to reduce ammonia
emissions were not as successful as projected beforehand by statistical
studies. 25 refs.
Back to List