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Published online 9 August 2006
Published in J Environ Qual 35:1659-1667 (2006)
DOI: 10.2134/jeq2005.0294
© 2006 American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Right arrow Air Pollution

Dependence of Ammonia Emissions From Housing on the Time Cattle Spent Inside

Sarah Gilhespya,*, J. Webbb, Andrew Rettera and David Chadwicka

a Institute of Grassland and Environmental Research, North Wyke Research Station, Okehampton, Devon, EX20 2SB, UK
b ADAS Research, Wergs Road, Wolverhampton WV6 8TQ, UK


Figure 1
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  		Fig. 1. Schematic diagram of ammonia measurement system. Arrows indicate direction of air flow. A, Single phase fan (2102/450 Woods air movement); B, aluminium honeycomb anti-swirl device (Airflow Developments Ltd., High Wycombe, Bucks.); C, 6-armed sampler; D, adsorption flask; E, water trap; F, Flow meter (Type GSD, G.A. Platon Ltd., Basingstoke, Hants); G diaphragm pumps (Type B100 SE, Charles Austen Pumps Ltd., Byfleet, Surrey); H, Remus 4G 1.6 gas meter (Schlumberger Gas systems, Basingstoke, Hants).

 

Figure 2
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  		Fig. 2. Ammonia emission rate during (a) spring 2002 and (b) autumn 2002. Dashed line shows when scraping occurred.

 

Figure 3
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  		Fig. 3. Ammonia emission rate during (a) spring 2003 and (b) autumn 2003.

 




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The SCI Journals Agronomy Journal Crop Science
Journal of Natural Resources
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Copyright © 2006 by the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America.