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Titel:
Instrument development and its application in studies of ammonia research and monitoring
 
Auteur(s):
 
Gepubliceerd door: Publicatie datum:
ECN 1-10-1999
 
ECN publicatienummer: Publicatie type:
ECN-RX--99-034 Artikel wetenschap tijdschrift
 
Aantal pagina's:
20  

Gepubliceerd in: Presented at the Nitrogen Workshop, Raleigh, North Carolina, 6-9 June 1999. - Submitted to Atmospheric Environment (), , , Vol., p.-.

Samenvatting:
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.


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